The Australian classification website has just updated with a whopper of a scoop - 'R-Type Dimensions' is coming to the Xbox Live Arcade!
From what we can gather, the game is being published by Microsoft themselves, and not title creators Irem, who recently released R-Type Tactics to the PSP. The game is being developed by Tozai Inc, who are also currently working on the fantastic looking 'Lode Runner' for Xbox Live Arcade.
Will it be a new version of R-Type, or a variation of a previous title? It will be interesting to see how this pans out. Surprising how the Xbox 360 has become the platform of choice for these kinds of games.