If you want to opt in to the Windows Insider channels, however, you can have it today.

Meet Microsoft’s Windows 10 May 2020 Update. On Thursday, Microsoft said the latest iteration of Windows 10—known informally as Windows 10 20H1 or version 2004—has reached what Microsoft is calling its final build of the cycle, Build 19041.207.

The May 2020 Update build will begin rolling out soon to members of the “Release Preview” ring of the Windows 10 Insider program, which is reserved for those who wish to receive what are essentially final release builds early, with minimal risk to their devices.
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https://www.pcworld.com/article/3538410/microsoft-announces-the-windows-10-may-2020-update-the-next-windows-for-your-pc.html