There's nothing too crazy about the latest driver - if you're a Radeon HD 7970 user we'd make the jump as we do see a couple of extra FPS here and there, the same might be said for HD 7950 users, but anything below that doesn't really seem to get much of a change with the latest driver.
What was a little disappointing was the HD 7770; I really had hoped that we'd see a couple of extra FPS with the latest driver when compared to the launch one, but as you can see, we really saw nothing change for the most part.
Of course we should see some gains with the Morphological Anti-Aliasing as promised in the release notes, but most people will probably find themselves like us using the normal AA / AF technology that are enabled in your games verse through the control panel.
While we do see a dip here and there as well, it's nothing major and if the bug fixes are something that will affect you, we'd recommend you jump on the latest driver. Our site editor Cameron noticed some strange BSOD's with the Cat 12.3 driver which so far seem to be cured with the latest Cat 12.4 driver.
If you're a HD 7900 series user as well I'd also suggest that you make the jump. If you're on the 12.3 driver, though, and everything is running smoothly, we'd happily suggest you stay on that as well.