The 5.7-rc5 kernel prepatch is out for
testing. “We’ll see what the next few weeks bring, but at least for now it all
feels normal, and like the 5.7 release is tracking well.

So please keep testing, and if you haven’t dared a 5.7 pre-release
kernel yet, we’re well into the ‘things look calm and safe to test’
time.“

Source: LWN.net – Kernel prepatch 5.7-rc5