You'll noticeTier: how much it should matter to you
3Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
StartupArea: what it touches
RemovedKind: in v2.1.246,
RemovedSection of the release
What
The boxed panels shown at launch, the What's new list with its "/release-notes for more" footer and the getting-started tips, no longer exist in this build, along with the shared panel layout helpers and a scrollable box component used nearby.
Details
No replacement rendering those strings is present. The only surviving mention of "What's new" is in the managed-settings documentation for the DisableFeatureDiscoveryHint setting.
Evidence
Tips for getting started
Strings lifted out of the shipped bundle, so the claim above can be checked against them.