https://wccftech.com/rc-of-ios-14-4-ipados-14-4-watchos-7-3-tvos-14-4-now-available/

The Release Candidate builds of iOS 14.4, iPadOS 14.4, watchOS 7.3 and tvOS 14.4 are now available for registered developers.

Apple has seeded the RC builds of its pre-release software to developers just now, including iOS 14.4, iPadOS 14.4, watchOS 7.3 and tvOS 14.4. What this means is, the aforementioned software is almost ready for prime time release and we should see the full and final build of the software seeded to everyone around the world within the next couple of weeks.