APB (All Points Bulletin) is a recently released MMORPG by the talent from Realtime Worlds (of Crackdown fame) and published by Electronic Arts. The game has been in development since 2005, with a long history of delays, recently bucked by a release 3 months earlier than previously expected.
The core idea is a city-wide game of cops and robbers where players can play either side, Enforcers or Criminals and make themselves legends within their chosen faction.

APB’s server strategy has had many different influences, including the experiences of Realtime World’s Creative Director, Dave Jones, with Dark Age of Camelot. He refers specifically to an incident where a French language server was merged with an English server, causing a language barrier which soured the game for many players. As a result of his experiences, he wanted a MMO that didn’t need large amounts of players on a server to survive, allowing each player to play the game his way, without interfering with what other people wanted to do. To this effect, APB features a interesting method of handling servers. The world is separated within two Districts (or zones): the Social District and the Action District.
The Social District, a 100,000 population server, is where players can socialize as well as customize clothing, tattoos and cars (more on that later). The Action District is where players get into the meaty part of the game, with non-stop chaos and bullets. When a player accepts a job, he (and his group) are taken to one of the many 100-user, low-population servers which comprise the Action District. Within the standard Action District, players may only interact with cars and other players related to their primary mission, so Criminals need not fear getting several groups of Enforcers on their tails randomly. [More...]
Posted by Conot
on http://mmorpg-info.org.