Gamers thirsting for a bigger gamerscore will be happy to know that beginning next month, all new Xbox Live Arcade games will support up to 400 points, an increase from the current cap at 200.
Additionally, with the update, all new XBLA titles will support up to 30 achievements. This is a spike from the previous cap of 20. This change will be optional for developers from April to May, but beginning in June, all new XBLA games will be required to sport 400 gamerscore points.
No specific titles have been confirmed yet as having 400 gamerscore.