The 5.4-rc6 kernel prepatch is out for
testing. “There’s no particular area or outstanding issue that is
worrisome, but if things don’t calm down this week, I suspect we’ll be
looking at one of those releases when we have an rc8. We’ll see how things
evolve here over the next couple of weeks.“

Source: LWN.net – Kernel prepatch 5.4-rc6