- Now "owning" a repo seems even more important. Regularly commit to someone else's repo? Not evident unless you go digging for it.
- The timeline bar-graph used to show blue for your own commits and grey for other people's. Now it either looks like you did all the work (your own repo), or someone else did it (forked repos).
Even if these two don't matter to you personally, I fear it'll help drive behaviour you see a lot in the Ruby community where, unless it's a huge project like Rails, people start their own versions in the hope of getting it popular and recognised. There's little status to be gotten from tinkering on "someone else's" repo.
(Think social startups except with code libraries.)