Sources are confirming that Microsoft is raising the max gamerscore limits for Xbox Live Arcade titles starting on June 1st. In addition, developers will be able to have a little more flexibility for DLC add-ons over the life of the arcade title, which means more Achievements with a new possible max cap of 62 with DLC add-ons.

If correct, the base Gamerscore for an Xbox Live Arcade title will move from 200 points/20 achievements to 400 points/30 achievements. With DLC allowing for another eight achievements per quarter (with a max of 100 points for a maximum of four quarters) this provides a new total of 800 maximum per Xbox Live Arcade title with max cap of 62, which is quite a jump from the old max of 35.

The additional gamer score addition is voluntary for releases coming between April 1st and May 31st ; but starting June 1st this will be the new norm for Xbox Live Arcade Gamerscore and Achievements going forward.