Battlefield 1943 was released on consoles in early July this year, and is a game in the Battlefield series that focuses on engagements in the Pacific theatre of World War 2. It was said to be released mid September on the PC, but a recent interview with one of the developers has revealed that due to the lengthy process of porting the game's Frostbite engine to PC, it will be delayed until early 2010. This is the official statement from Gordon Van Dyke:

We haven't released a Frostbite [DICE's game engine] built game on PC, so going into this project we lacked a starting foundation we had on console. There are also many different and unique only challenges to the PC that has lead to us pushing the release even further to Q1 CY 2010 [early next year]. This was a hard pill to swallow, but it was absolutely needed to ensure the features and functionality that PC Players have come to expect from Battlefield on PC are not missing. Things like support for DirectX 9 and 10, higher player count (up to 32-player matches), wide peripheral support i.e. joysticks for flying, VoIP, and ranked server provider hosting. So it was and still is the absolutely right decision, for quality sake, to not release until it is ready.
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This can come as good news for PC gamers, as we know that EA are making sure that players will get the best experience from the game instead of a simple port. Things like higher player counts (32 from 16) and extra maps (Coral Sea, which console players have to unlock), ensure that the PC version makes the most of it's superior capabilities.