https://wccftech.com/fast-ring-windows-10-20h1-build-18875/

Microsoft has released Windows 10 Insider Preview Build 18875 from the 20H1 branch – Windows 10 version releasing next year. With today’s release, the Windows maker is moving the Fast ring forward to 20H1 and merging Insiders who had opted-in to Skip Ahead back into the Fast ring. “That means Insiders in the Fast ring and those who opted-in to Skip Ahead will receive the same builds going forward,” the company wrote.

Currently, Insiders in the Slow and Release Preview ring are on the May 2019 Update, which will be released to the public next month. The May 2019 Update is also up for grabs by everyone who’s interested through the Release Preview ring.