I can't possibly be the first to notice this, but I haven't found mention of it. Try this:
Sometimes it will create just the shared project, sometimes it will create both shared and droid projects. But no matter what, VS stalls... no iOS project, no completed solution. I would expect this behavior in a top, key feature in a beta, but not an RC; scary. I didn't believe it, so I had to try this on 2 completely separate machines.
Interestingly (and thankfully), if you let VS create the solution directory it seems to create all the projects successfully, but VS still hangs without loading them. You can close and reload it. Strange though, it created a WinPhone folder, empty, and didn't add that to the solution.
It's all wonky.