#Release Preview13 discussing

Hi Fabian, 

Two separate reasons, per official Winter '27 release notes: 

1. "Compare Values Between Fields in SOQL" (FORMULA() in WHERE clauses): requires API version 68.0+, and is scoped to sandboxes/Developer Editions/scratch orgs only. If your sandbox's API version isn't bumped to 68.0+ yet, it won't show even on Winter '27. 

2. "Preview Records from Lightning Reports Without Losing Context": ships as Beta with Salesforce's standard disclaimer that beta features aren't guaranteed to roll out simultaneously with GA features, even within orgs already on the release. Some Winter '27 betas explicitly require Salesforce Support to switch on (e.g., "Show Only Matching Records Across Blocks in Joined Reports" says exactly that), so it may need manual enablement rather than a Setup toggle you're missing. 

Reference:

Next step: confirm your sandbox's API version for #1, and if #2 still doesn't appear, open a case with Support to check if it needs manual enablement on their side.

Hi Barb, 

I couldn't find a confirmed public Known Issue tied specifically to Winter '27 for this yet, so this may be new/unreported so far. A few things worth checking first, since these are the most common causes of activities suddenly disappearing after a release: 

1. Setup > Record Page Settings — check if "Default Activities View" got reset to "Related List" instead of "Activity Timeline" (or vice versa) for affected users/profiles. Releases sometimes reset this default. 

2. Check if it's a permissions/FLS issue on Task/Event fields specifically introduced by a release-related metadata change, rather than the timeline component itself. 

3. Ask affected users to try Personalize view (gear icon on the Activity component) to reset their individual view — a stale personalized setting can also break post-release. 

Reference:

If none of that resolves it and you can reproduce it consistently, worth opening a case and referencing Winter '27 explicitly — if others in this group hit it too, it'll likely get logged as a Known Issue soon.

The Release Feature Matrix xlsx is put out by Salesforce's Release Readiness and Feature Adoption team, and it typically drops around the time the release goes to sandbox preview / when the Release Notes hit preview, a few weeks ahead of the major GA rather than at GA itself. 

So for Winter '27, watch the sandbox-preview window, the matrix tracks it closely. Two places to catch the exact drop: 

1. The Release Readiness and Feature Adoption group here in the Trailblazer Community. That is where the team posts each cycle's matrix and announces it, and this 'Release Matrix Post' topic mirrors the latest file from there. Join or follow that group and you will be notified when the Winter '27 xlsx goes up. 

2. The official Salesforce Releases site (

). It lists Winter '27's exact sandbox preview and GA dates, so you can line up when to expect the matrix. 

If we are still ahead of the preview window, it is normal for it not to be posted yet, it will appear as preview approaches. 

Hope that helps!