An update on the official APB website reveals that the game will now be made available for free on the PC. As to the other platforms (Xbox 360) and clients, there's still no new solid information on those.
To quote the post:
How much will APB cost?
The actual price for the game itself is still under discussion but we ll keep you up to date. We can confirm that APB will not require a monthly subscription.
Will there be console ports? Or a Linux or Mac client?
We re evaluating opportunities for a console port of APB but there s nothing concrete to announce at the moment. There will not be a Linux or Mac version of the game.
Now that's nice. I mean, about it being free on the PC, I mean. As for the console version, it sounds like they're still busy working on it so we'll just have to wait until anything more concrete comes up.