Although Xbox 360 players have already been playing the "Call of Duty®: Black Ops II Revolution" DLC for three weeks now, players on other platforms have had to wait until the exclusivity period ran out. This coming week, the DLC will finally appear for Playstation 3 and PC players. To celebrate this fact, Treyarch is holding a Double XP weekend on all platforms.
The weekend starts at 10AM PST today (February 22nd) and lasts until 10AM PST on February 25th. This gives players 72 hours to gather XP to be able to Prestige once in multiplayer matches and enter the Penthouse if you haven't done so already.
Alternatively, you could just aim for a low target and hit level 10 to welcome yourself to the club.