Well not the entire HD Collection. That would be an unspeakably huge download. Anyway, the games included in the MGS HD Collection will also be available on XBLA and PSN.
The first thing that will be able to weasel it’s way out of the air vent and see the light of day will be a port of Metal Gear Solid: Peace Walker on the Playstation Network.
The other two games will surface in the later half of November, and all ports on the Xbox Live will be released some time in 2012. No news on prices in the US, but so far prices for the Metal Gear Solid: HD Collection seem to be exorbitantly high. Hopefully the same won’t hold true here.