Call it Achievement inflation if you want, but Microsoft has announced that developers will have the option to include 400 Gamerscore Points in their Xbox Live Arcade titles beginning in April. With an increased Gamerscore, XBLA games will also be allowed to include more Achievements, with a new maximum of 30. This is double the current limits, which are 200 Gamerscore Points and 12 Achievements.
Furthermore, beginning in June, the 400 Gamerscore/30 Acheivements maximum will be a requirement for all Xbox Live Arcade titles.
So prepare to hear “Achievement Unlocked” a lot more often in the future.