Hi Jellybaby,
You should now see a "User Menu" on the right hand side, click "Your Details" and it will take you to the profile section for updating your avatar.
We switched the main profile editor to the default forum software instead of the community builder system as some of the features for moderation were unavailable. I am still testing to move the avatar changing feature back to it as well. It's a 2 second change but I don't know if it will reset everyone's avatars so don't want to take the chance yet. (I don't want lots of people irritated with me because they have to re-upload their avatars

)