Alan Kertz, Core Gameplay Designer at DICE, has let the world know that the Battlefield 3 team has been working on some gameplay tweaks. It was then talked about by the Symthic forum, where the data was combed through.
The new tweaks might not all make it in, but you can bet your bottom dollar at least some of them will. Once the members of Symthic unleashed their view of the data, Alan Kertz then confirmed this via Twitter, where he said:
yes symthic has authentic update info, your feedback on these preliminary changes will be hugely valuable for a future update.
Check out the gameplay balances here.