This news comes to me from the iconic website Geek.com 
Linux users with newer AMD graphics cards know how tedious it can be to properly configure their card in the distro, and that's if you're lucky... because often even then, we can't take full advantage of its performance because the available drivers are (to put it kindly) "a complete disaster" 
Well, let's hope the situation improves now ...
As the headline states, AMD has released Linux drivers for its Radeon 7000 GPUs . They come in the form of patches , and users of the latest Fusion Trinity APUs will also benefit.
Hopefully these improvements will be included in kernel 3.4 
How exactly does this help us?
Now if you have one of the most modern AMDs, with these improvements everything will work noticeably faster, your card will really work/function as it should have always done, in a more fluid way. Also, if you want to overclock it you can do it 
Internal power management has been improved, the thermal sensors are now more reliable ( as they apparently gave inaccurate readings before ), and obviously… graphics acceleration for videos, games, etc. has been improved 
If you want to read even more technical details, you can check out Phoronix 's post.
I'm not saying that AMD is perfect on Linux now ( because from personal experience I can tell you that's not the case... ), but hey... it's progress, right? 😉
regards