You're correct, uncompressed FullHD video (~3Gbps) won't fit in WLAN or USB2.0 HS. Thus the available compressed MPEG4 AVC, H264 movie-file is easily streamed (20..40Mbps) and to be decoded at display side.
so when could we expect to see something delivered to our tablets? 1 month from now? 6? a year?