Re: When comes the 1.1?
As DJPaul so succinctly states, BP 1.1 will be released when it is finished. The date in the roadmap or timeline in Trac is not written in stone. It most likely will be released some time in September but it could always be pushed out further if more serious bugs are discovered or Andy wants to add additional enhancements.
It is close, though, and if you want to get prepared you should be running a trunk version in your development environment. As always, you are discouraged from running the bleeding-edge version (which is trunk) in a production environment–a live site.