It doesn't appear to be Angela, who was revealed to be sister to Thor and Loki in the Tenth Realm mini-series spinning out of Original Sin. Angela has red hair. Personally, I am really excited to this change and hope it remains for a long time to come.
Update: Apparently, this new Thor will relaunch the Thor: God of Thunder series into another iteration of simply Thor with a #1 issue beginning in the fall.
