There has been a shock announcement from Microsoft in the wake of Stallion83's recent (and staggering) milestone that saw him hit 700,000 Gamerscore. Gamerscore has always been a fun and addictive, but somewhat arbitrary number for gamers across the world, until now.Microsoft spokesperson Robert Armin released a hugely unexpected statement detailing that gamers would now be able to "cash in" their gamerscore against rewards and new content associated with their Xbox LIVE profile:Here at Microsoft, we never truly realised what we had created when we devised the concept of achievements and gamerscore all those years ago. Since then achievements and gamerscore have become something of far greater value at a personal level to many gamers.It's a badge of honour amongst the hardcore and a fantastic system to compare your 'worth' to your friends. For the casual gamer it's the perfect roadmap of your relationship and history with your games and Xbox LIVE. However, we didn't envisage a scenario where gamerscore would reach such astronomical levels. That's not a problem to us; we can cope with the extra digits, but we feel that perhaps these numbers could be put to work.We were pretty stunned by this news, but you'l not have long to wait as the change lands worldwide for all Xbox LIVE users on Monday. The plan doesn't stop there, however, as Armin unveiled plans for 'Gamerscore Locked' DLC with no additional achievements.In light of this announcement today, we are revealing that as of April 1st, gamers worldwide will be able to cash in their gamerscore against a library of rewards and additional content via Xbox.com -- there's everything from avatar props to exclusive DLC.When we say exclusive, we mean exclusive. We want to encourage gamers to buy more and play more; as of today certain Xbox 360 titles will have unique 'Gamerscore Locked' DLC made available for a fixed amount of your gamerscore. None of this will carry any additional achievements.You're no doubt eager to hear how your score will be affected and how the system will process transactions. Armin had a few details for us in the press release:When you spend your gamerscore, we'll ask you which achievements you'd like to add to your basket and then we'll deduct all of their worth from your total gamerscore. The new score will be your true achievement score. Any previously earned achievements will remain unlocked and you will not be able to earn these again.We have a partial list of the leaked pricing scheme below, along with Gamerscore Locked DLC launching tomorrow.Dashboard HD themes - 50GGamer Pictures - 100GAvatar awards/props - 500GSpecial formatting in Gamertag - 1000GAdditional dashboard styles - 1000G "Gears of War 3 GS Locked Map Pack 1" - 5000G "Gears of War 3 GS Locked Map Pack 2" - 5000G"Battlefield 3 GS Locked Weapons Pack 1" - 3000G"Battlefield 3 GS Locked Campaign Prologue" - 5000GWe'd love to hear your thoughts on such a divisive topic and please be sure to check out the Gamerscore Cash In page ahead of tomorrow.