How long does it take for a game to be reviewed for a official channel?
That depends on how busy the reviewer is.
In response to Nadrew
Hmm i can't remember who did the rpg and action reviews i hope there not busy. I think maz does rpg i hope i dont get him though i dont think he likes me hehe.

In response to HendrixandCamo
I have access to both of those channels, but my time has been very limited lately, I'm not sure who else is on those channels, but I'm sure it won't take too long, but if it does, sorry; but the review staff is volunteer, and we don't always have the time to review things on a regular scheduel.
It got reviewed today, with a few others. I might be able to do some more today at college too.