Haven't reproduced yet, but it seems as if you can't (at least visually) add more than one blog running 3.7 final.
- Go through set up and log in to an account with multiple blogs
- Select blogs screen shows 1st blog selected and the button has an updated count
- Select another blog and that is now highlighted but the previous blog looses the check mark and highlighting, however the button count is correct.
Haven't reproduced yet, but it seems as if you can't (at least visually) add more than one blog running 3.7 final.