With the Varicam 35 and Varicam LT gaining ground as aquisition tool, Vegas pro is dropping behind on support. Vegas 13 should have support for AVC-Intra, but the new versions (AVC-Intra 4K and AVC-Intra-LT) are not supported unfortunately...
http://pro-av.panasonic.net/en/sales_o/p2/support_info/intra2k4k.html
Vegas Pro isn't even on the list - but all the others are :
Adobe, Avid, FCP, Edius. Just Vegas Pro missing...
(and Resolve is, athough that's a relatively recent grading and editing tool...)