10 major bugs that have been fixed - Source: http://www.enterbf3.com/

1. Battlefield 3 Squad issues: Cannot play with friends within same squad, squads get split up onto opposite teams, etc.
Squad management systems will be introduced to help players control what squad they're in along with other features: creating squads prior to launching Battlefield 3, squad member retainment (staying in the same squad when continuing into other matches, locking squads, inviting squad members, kicking squad members, and muting the annoying ones.

2. Regarding additional Open Beta content and fixes/patches for consoles, including PlayStation 3 issues with chat and party systems.
DICE is focusing their efforts towards the final release of the game, we can all agree that this is a better idea. "While we would like to patch the Open Beta, DICE is currently focusing its available resources on polishing the retail game."

3. Will DICE have enough time to iron out everything by release?
A lot of issues will be fixed, for a detailed explanation look here.

4. Can we have ability to change settings/options before deployment into match on PC?
The ability to modify your settings via the deploy screen has been added into the retail game.

5. Issues with terrain stability and "falling into the map" on Operation Metro
This has been fixed for the beta via a server side update.

6. Kill cam sometimes zooms out too far or outside the map
This has been fixed for the launch of the retail game.

7. A bug that sometimes keeps some players from being able to sprint
This has been fixed for the launch of the retail game.

8. Screen flickering/stuttering. Blue screen remains after respawn. Game locks up after deploying C4 (360)
This has been fixed for the launch of the retail game.

9. Downed bodies appear to be dead, but are not
The DICE team has been looking into this issue - which is caused by a combination of incidents in a confined area - and are working hard to address the issue for the launch of the retail game. It could be this glitch or that the Battlefield 3 player is simply mistaken.

10. Why is the hit detection seemingly different from Battlefield: Bad Company 2?
The netcode is one of the many things that we are testing as part of the Battlefield 3 Open Beta and is not necessarily reflective of the final retail game. The DICE team appreciates and has heard the feedback you've provided and is further optimizing online play for BF3.