I was on my Xbox this morning downloading some videos, arcade games etc when I saw Warp and I've already seen the videos and it looks like a great game. Problem is it would not allow me to buy it or get the trial as there were no links to it. I'm still on XBL with a gold membership so I know that aint the problem. Just wondering what's going on with it.... (it was under the tab where all the XBLA games are). Perhaps they're just promoting it for now or something.
It will only be on there as you can download some trailers for it. Same for Sonic 4 Episode 2, that appears in the arcade but has not been released yet.