For one reason or another I wasn't in here the last couple of days, so missed the initial announcement of this release. Just now updated through the UI with no problems at all, and everything seems to be working fine.
With regard to the issue of now requiring an account to register (raised in another thread, I think?), it would seem that it only applies to a fresh install -- or possibly when renewing registration, which is still several months off for me. I got no such notice when updating through the UI, or when rebooting afterwards, and my registration info seems to have been imported properly from the previous version.