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ShipDelta Sample Brief

Date: Friday, September 19, 2026 (ET) Prepared for: Public demo — sample customer ICP (PMM / founder at a B2B SaaS) Competitor set (5): Notion · Linear · Figma · Slack · Stripe Window reviewed: Public pages checked on 2026-09-20 ET; material items from ~late Aug through mid-Sep 2026 Sources: Public changelogs / What’s New / product blogs / API changelog only (see companion source pack)

What changed (this cycle)

All five names shipped something worth a Friday note. The through-line is agent workflows leaving the chat box: reusable skills, recurring loops, design-to-content pipelines, coding agents in shared channels, and billing APIs that make customer self-serve cleaner. None of this is pricing drama; it is product surface expansion.

Who cares

| Role | Why this brief matters |

|------|------------------------|

| **PMM / competitive** | Messaging and battlecards: “AI features” now means skills libraries, agent loops, and MCP/admin controls — not just a chat panel. |

| **Product** | Roadmap pressure on collaboration + agent coordination (Notion skills, Linear Loops, Slack Code channels). |

| **Design / brand** | Figma Weave tying Design frames into generative workflows is a concrete competitor capability to demo against. |

| **Eng / platform** | Stripe API 2026-08-26.dahlia touches Billing Portal, Payment Links (Connect), Checkout funding controls. |

| **RevOps / CS** | Slack Salesforce approvals + CRM tracker; Notion Business/Enterprise agent admin; Linear third-party app approvals. |

Suggested watch-outs

1. Agent packaging is becoming the feature. Skills (Notion), Loops (Linear), Skill Sets / Big Mode (Slack) — buyers will ask “can we standardize how AI works here?” not just “do you have AI?” 2. Admin and compliance catch up. Model controls (Notion), third-party app approvals (Linear), enterprise-managed MCP auth (Figma earlier in Aug) — enterprise deals will probe this next. 3. Slack’s cadence is monthly feature drops, not a daily changelog. August 31 drop is the latest full product post; September product drop was not yet published when this brief was compiled. 4. Stripe signal is API-changelog heavy. Material for payments/billing teams; less visible to end-user PMM unless you sell Connect or Billing. 5. Do not over-claim. Plan gating (Business/Enterprise, paid Linear, etc.) is called out on source pages — verify plan fit before a sales talk track.

Per-competitor notes

1. Notion — material change

Source: What’s New · fetched 2026-09-20 ET

• **Sep 15, 2026 — Notion 3.7: Agent skills for your whole team.** Reusable instructions (“skills”) that teach Notion Agent how the team works; shared skills library; run via `/` in Agent chat; export as `SKILL.md` for Claude Code, Codex, Cursor, Gemini, or Grok.
• **Also in 3.7 (same post):** Custom MCP connections (e.g. GitHub, Amplitude) for Agent (beta, Business/Enterprise); Notion Agents iOS app; Custom Agents can call sub-agents; post-meeting Custom Agent workflows; redesigned model picker + Knowledge Board; Custom Agent Insights in Public API; Agent SDK public beta.
• **Sep 9:** Workspace owners can control which AI models Agent / Custom Agents may use (Business/Enterprise).
• **Who cares:** PMM positioning against “shared AI playbooks”; product teams selling agent + knowledge-base stacks; admin buyers needing model lockdown.

2. Linear — material change

Source: Changelog · fetched 2026-09-20 ET

• **Sep 14, 2026 — Loops for product management.** Loops (recurring agent workflows) now trigger on more workspace activity (initiatives, projects, cycles, issue field changes); can edit Linear documents; can draft/post Slack updates; continue any run as an Agent conversation. Introductory Loops credits extended through Dec 31, 2026.
• **Sep 14 — Callout components** in descriptions/docs (with GitHub callout mapping in PRs).
• **Sep 3 — Priority inbox** separates high-attention notifications; customizable sources/filters.
• **Sep 3 — Draft projects with Linear Agent**; document editing on mobile; rich previews in diffs; **third-party app approvals** on paid plans.
• **Who cares:** Issue-tracker competitors; anyone messaging “agent that keeps docs/Slack in sync when plans change.”

3. Figma — material change

Source: Release notes · fetched 2026-09-20 ET

• **Sep 17, 2026 — Figma node in Weave workflows.** Connect Figma Design frames into Figma Weave; choose text/image layers as inputs while keeping fonts/layout; generate campaign/localized/video assets at scale; sync connected assets back from Design.
• **Sep 16 — Folder UI:** folder contents preview, clearer colors, duplicate folders + contents (all plans).
• **Sep 16 — Publish Weave tools to Figma Community** (image/vector tools usable in Design).
• **Sep 3 — Opacity at scale** via variables (alias opacity without detaching color).
• **Who cares:** Design-tool competitors; marketing-ops teams watching generative design pipelines; design-system owners (opacity variables).

4. Slack — material change

Sources: Aug 2026 Feature Drop · Jul 2026 Feature Drop · Slack CLI changelog Sep 15 · fetched 2026-09-20 ET

• **Aug 31, 2026 — “Where Agents are Heating Up” (latest full product drop at time of check).** Slack Code (code channels + tagging coding agents); Agents tab; Slackbot Big Mode + Deep Research + Skill Sets; Salesforce approvals in Slack; Sales tracker for Slack CRM; Seismic enterprise search; comment-only canvas role; MCP tools for Slack Lists; Workflow Builder Repeat / collections improvements.
• **Jul 30 drop (still relevant context):** Slackbot slides + Surfaces; CRM Sales Tracker on mobile; scheduled status; temporary channel join; Workflow Builder Lookups & Repeaters.
• **Sep 15 — Slack CLI v4.8.0** (developer surface): `slack manifest sync`, manifest-source flags, `code_channels` manifest support — secondary for most PMM readers.
• **Sources checked / no newer monthly Feature Drop:** No September 2026 Feature Drop post was found on Slack’s blog at fetch time; Mac client notes in late Aug were mostly “nothing major.”
• **Who cares:** Collaboration/suite competitors; Salesforce-heavy GTM stacks; teams selling agent-in-workplace narratives.

5. Stripe — material change

Source: API Changelog · fetched 2026-09-20 ET

• **API version `2026-08-26.dahlia` (current at fetch).** Non-breaking highlights include: customer-update deep link for Billing Portal sessions; entitlements query + portal launch in Customer Sessions; frozen fields on Invoice Items; Billie payment method for invoices/subscriptions; higher subscription item limit; update Connect parameters on existing Payment Links; Link funding-source identifiers; restrict card funding types in Checkout Sessions; metadata on Confirmation Tokens; IGIC place-of-supply scheme for EU tax.
• **Preview track (`2026-08-26.preview`)** includes breaking items (e.g. removing payment-method-type specification on Payment/Setup Intents) — watch if you track preview APIs.
• **Who cares:** Payments/Billing/Connect product and eng; less of a “feature splash” for pure end-user PMM unless Connect or Billing is in-scope.

Sources checked / no material change (this pass)

None of the five had an empty window. Narrow notes:

• **Slack product blog:** latest *Feature Drop* remains August 31, 2026; September monthly drop not published yet as of 2026-09-20 ET.
• **Slack Mac release notes:** late-August client posts reported no major user-facing changes (not treated as material product news).

Full URL list with fetch dates: sample-01-sources.md.

AI assistance disclosure

Drafting and packaging of this sample brief were assisted by AI tools under human direction. Every cited change was checked against the public pages listed in the source pack. AI did not invent features or private facts.

Not legal advice

This memo is a public-source research summary for informational and demo purposes only. It is not legal advice, not financial advice, and not investment advice. Plan availability, pricing, and rollout timing can differ by workspace; confirm on the vendor’s own pages before acting.

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