Thats why they are beta drivers 1st........
I went ahead and installed them this morning. But just so you know why I usually wait. I had a set of non beta drivers, and had an issue with them, that the only reliable solution was to add a second monitor to stop the clock speed from changing, the second monitor held it at full speed. I had the wonderful problem of the pink screen for weeks before I stumbled across that solution. I had tried newest at the time, and even went back a couple sets trying. Luckily the second monitor trick worked, it just made it run hotter, but I installed afterburner, and solved that issue with it by forcing the fan to run faster.
edit to add this : this was all on my brand new system this year, the GTX 560ti, which is actually listed as one of the bug fixes on this new driver release, so thanks.
Glad to help, but i have the 560 TI (classified) card also and have had no problems what so ever.....