This patch http://git.yoctoproject.org/cgit/cgit.cgi/poky/commit/?id=9d5483c37523ff3d334c98cafb848282b54962cd renames the layer within the meta-yocto repository to meta-poky. We would need the layer index updated to reflect this change. Otherwise, Toaster projects using the 'master' or 2.1 releases will not add meta-poky to the default project configuration. Builds will fail out of the box as a result, since DISTRO is set to poky by default but nothing provides it.
Done: http://layers.openembedded.org/layerindex/branch/master/layer/meta-poky/ It would have been nice to replace meta-yocto with this but unfortunately the layer name comes from the LayerItem not the LayerBranch, so it can't be different per branch.
I've also just deleted the master LayerBranch for meta-yocto, so that should no longer show up for master.
This fixes Toaster, at least if you wipe the build and _toaster_clones directories. It might also work if you run lsupdates and keep your existing build directory, but we haven't tried it.