The Imagen 4 shutdown is now effective, not merely scheduled. Builders still calling the old model IDs need to migrate to current Gemini image generation, where model names and interaction patterns differ enough to warrant explicit compatibility testing.
The non-Plus checkout migration is now an active compatibility boundary rather than an approaching deadline. Orders can continue while old post-purchase scripts, pixels or widgets stop working, making end-to-end conversion and app-behavior checks important after the cutover.
Apple has narrowed an earlier plan to unify Sign in with Apple and iCloud+ Hide My Email domains: only new Sign in with Apple relay addresses are moving to `private.icloud.com`, while Hide My Email stays on `icloud.com`. Existing relay addresses continue working, making this a compatibility migration rather than an address replacement.
Sentry has completed a breaking alerting migration. Legacy alert APIs are gone; metric detection now lives in Monitors while notification routing lives in Alerts, and old direct integrations must use the replacement endpoints.
A major UI framework is moving from legacy Sass and JavaScript conventions to native CSS and ESM. Existing Bootstrap 5 projects need a deliberate migration plan, not a blind version bump.
Theme developers using Shopify CLI 3.83.x and older against password-protected storefronts are now past the documented cutoff. Shopify requires 3.84.0 or later for these flows; the live changelog's September 23 date supersedes the earlier October 1 deadline in this dossier.
Teams with pinned, custom-image or auto-update-disabled GitHub Actions runners can now see registration or job execution fail before the September 25 cutoff. The migration is not just a one-time jump to v2.329.0: already-registered runners must also stay within 30 days of the latest runner release.
Rosetta’s transition is now an application compatibility deadline rather than an open-ended safety net. Intel-only Mac apps need an Apple-silicon build before support ends after macOS 27, with only a narrow exception retained for older unmaintained games.
The CLI itself is not being deprecated. The risk is narrower and operational: stale Linux repository keyrings can stop package installs or updates from verifying after the old signing key expires.
The August 28 transition is now active, and Railway’s current documentation removes an earlier ambiguity about new services in existing projects. Config as Code is legacy-only from here; production users should migrate and validate `.railway/railway.ts` before the December hard cutoff.
The checkout ScriptTag shutdown already had an earlier deadline; this is the separate storefront cutoff. Pinning an old Admin API version will not preserve write access after October, and any feature still depending on an injected storefront script stops working in March.
The platform now offers an objective-oriented /goal interface as well as Custom Flows; availability depends on GitLab 19.3+, Duo CLI 9.17+ and eligible tiers.
Google Ads has changed a long-standing edge case in automated bidding: budget-constrained campaigns now aim more consistently at their configured target instead of sometimes materially overachieving it.
The change is both a media-buying default and an API migration. Advertisers that want online-only Shopping campaigns must move that intent into listing scope or the inventory filter instead of relying on `ShoppingSetting.enable_local=false`.
Google’s September Search changes now form a broader migration story: legacy campaign-level Broad Match and standalone Automatically Created Assets settings will be converted into AI Max, while language targeting stops affecting Search delivery and related API mutations begin failing.
Demand Gen is becoming a broader acquisition system rather than only a visual campaign type: advertisers can test conversational lead capture, travel offers tied to destination context and AI-assisted horizontal/vertical video production from one campaign surface.
Google Ads' new channel-priority controls offer a way to test Search partners and Display without giving them unrestricted budget, but the limits are not guarantees and Demand Gen has no allocation caps.
Automated promotions make the advertiser's own website a source for ad assets. Google can find an offer, validate it and surface it without a marketer manually creating the promotion.
Audience-management systems can now fail with `SEGMENT_LIMIT_EXCEEDED`, while old geography identifiers begin returning invalid-field errors after August 31. LinkedIn also opened the Matched Audiences API to applications from qualified developers, increasing the importance of handling these limits correctly.
Email operations can now query Resend’s deliverability and engagement data directly through `/emails/metrics`. The API makes bounce and complaint thresholds, domain-level trends and campaign reporting usable by internal dashboards, scheduled checks and agents.