GamerBytes reports that several upcoming Xbox Live Arcade games now have either an Xbox.com splash page or forum. Specifically, Death Tank now has its own page on Xbox.com complete with screens and a trailer (this one, if your curious). Additionally, both Minesweeper Flags and the first person shooter Cellfactor now have their own forums on Xbox.com (though not their own individual pages). While it's not definite at this point, a game showing up on Xbox.com is generally an indication that it will be released in the near future. We're not sure about Minesweeper Flags, but both Cellfactor and Death Tank definitely have us intrigued, so here's hoping we see them sooner rather than later.
Source -- Xbox.com - Death Tank page
Source -- Xbox.com - Minesweeper Flags forum
Source -- Xbox.com - Cellfactor forum