Windows 8 Metro packager

Hi Guys, anyone here has made any Air app for Windows 8 Metro? I was wondering, based on existing available resources... ehh, hmm, something like packaging a runtine-captive windows air app, is it that simple? I guess it could be something very straight forward. anyone knows any link or useful information? someone said we can't make air apps for windows metro yet, is that true? thanks! cheers.