Thursday, 24 September 2026

Copilot UX components is the final name for SharePoint Copilot Apps

The capability that shipped as "SharePoint Copilot Apps" in the July public preview, then became "Copilot Components" in August, is now finalized as "Copilot UX components": SPFx-built interactive components implementing the MCP Apps model that render charts, maps, KPIs, forms and approvals inside the Microsoft 365 Copilot canvas. The refreshed docs confirm SharePoint hosts component assets automatically and, depending on tenant configuration, can serve them through the Microsoft 365 CDN, and that an admin must explicitly select "Add to Teams" after uploading the package to sync the agent. No Microsoft 365 Copilot license is needed to develop or test during public preview; GA licensing is still undecided.

Why it matters: teams building Copilot UI surfaces should settle on the final name now and plan for the explicit "Add to Teams" deployment step, which is easy to miss and leaves the agent unsynced.

learn.microsoft.com

SharePoint Framework 1.24 beta.5

SPFx 1.24 beta.5 rolls the tool-resolution model back to the beta.3 behavior after an issue was found with the approach introduced in beta.4. Microsoft states the next step is most likely an initial release candidate, with SPFx 1.24 general availability targeted for October 2026. The 1.24 preview line carries React 18.x as the default React version, build-time validation of declarative agent manifests against the agent schema, and newly scaffolded Copilot UX components targeting declarative agent manifest v1.8. No deprecations are listed for the 1.24 preview.

Why it matters: the October GA target is now explicit, so solutions still on React 17 have a short window left to validate against React 18 before the stable release.

learn.microsoft.com

Control information density in model-driven apps

Model-driven apps gain three display density options - Comfortable (default), Cozy and Compact - that adjust layout spacing while preserving accessibility requirements. Admins and makers set a default at environment and app level, an individual user preference takes precedence, and the feature requires the Header and Navigation Refresh to be enabled, where it is on by default. Preview is dated September 2026 with general availability in November 2026, across Worldwide (Standard Multi-Tenant), GCC and GCC High. Some controls do not yet support display density.

Why it matters: it is on by default wherever the Header and Navigation Refresh is enabled, so custom PCF controls that have not adopted Fluent design spacing tokens will render out of step with the rest of the app.

microsoft.com

Validate eligibility for CSP growth margins through APIs

From 00:00 UTC on 23 September 2026, CSP distributors and direct bill partners can validate customer eligibility for license-based growth margins through the eligibility API, and discover and download growth margins information such as eligible SKUs and minimum seat requirements from the Pricing workspace in Partner Center. Growth margins transactions remain generally available from 1 October 2026, and the Microsoft 365 E5, Microsoft 365 E7 and Copilot promotions end on 30 September 2026 as part of the transition.

Why it matters: the promotions being quoted against expire on 30 September, so eligibility and SKU lists are worth checking this week rather than repricing deals after 1 October.

learn.microsoft.com

Purview auto-labeling per-policy coverage report

For each enforced auto-labeling policy, admins get a coverage report correlating the files processed during enforcement against the latest simulation run, showing how many files were labeled or left unlabeled and whether they appeared in the last simulation snapshot. General availability is dated November 2026, across GCC, GCC High and DoD.

Why it matters: it closes the gap between a clean simulation and what enforcement actually touched, which is the usual blind spot when defending a labeling rollout to a compliance team.

microsoft.com

Copilot Dev Camp Summit Fall Edition on September 30

Microsoft announced the first of a new quarterly Copilot Dev Camp Summit, on 30 September 2026 at 08:00 Pacific, covering Microsoft 365 Copilot, Cowork, GitHub Copilot and Microsoft IQ capabilities for the extensibility community.

devblogs.microsoft.com

Building the system for AI at work

A customer letter from Jared Spataro setting out Microsoft's enterprise AI approach across platform (models from OpenAI, Anthropic and others), business model (subscription plus usage-based billing) and partnership (forward deployed engineers); no new capabilities or ship dates are announced.

microsoft.com