We have windows 32 binaries posted for those adventurous enough to taste the cookies while they are hot. We are working on the windows 64-bit binaries. Those should be out tomorrow. We'll be working in the coming week to get the installers ready to put up so they are available via Stack Builder. We'll probably put up the 32-bit ones first, hopefully followed shortly by the 64-bit ones. You should see PostGIS 2.0.0 soon on Yum as well. Devrim is cooking :).