The Samsung Galaxy S II has been selling all over the world, but not in the US. It looks like the wait is finally over as Samsung sent out invitations to a big announcement on the 29th. The invitation does not mention the Galaxy S II by name, but the background to the invitation sure looks like a "galaxy" with all the stars on it, and it has the letters "II" printed on it. We're pretty sure the sequel to the popular Galaxy S will be announced.