I'm positive some songs will leak before 2011... Like songs we've always wanted and some early demos.
So there can't be any damage done to the new release.
No. She simply can not release the album in June. That is entirely too long of a wait for me to handle. April is about as late into 2011 I can wait for her without going on a rampage.
And Rihannafan, she could release an album any day of any week of any month and it would be a smash. She's that big right now. Don't expect her to flop in the near future