The second Release Candidate for 6.2.1 is now available for testing. Please report any issues you find at https://bugs.unrealircd.org/
The focus was on performance improvements this time but also various small new features were added. See the release notes for all the information. (The changes between -rc1 and -rc2 were mostly fixes of things that were introduced in -rc1)
Download / Upgrade
As always, you can download UnrealIRCd from www.unrealircd.org. If you want to upgrade on *NIX, then use: ./unrealircd upgrade --rc