Microsoft has released Windows 10 Insider Preview Build 19592 to Insiders in the Fast ring. The new build brings back new tablet experience for 2-in-1 convertible PCs. Microsoft has updated the logic in the Windows Search file indexer that finds better times to index your files so that your computer doesn’t get bogged down by the indexing process while you are using the computer. Microsoft will roll out to a limited amount of users at first and expand to more users as time goes on.
Source: https://www.bleepingcomputer.com/news/microsoft/windows-10-insider-build-19592-brings-new-2-in-1-pc-experience/