Well it leaked out on the web.

I did some testing, and results are stunning to say the least.

All the tests below are done at clock speed of 864/1165. GPUZ is not detecting clock speeds properly with this driver.

First,
3DMark Vantage

I know its a synthetic benchmark but anyway.

Here is the result :

Its over 200 Points jump from Catalyst 8.8beta which in itself is faster than official 8.8


Crysis

The Crysis results are stunning to say the least. Absolutely amazing FPS for HD4870.

1280x1024 DX9 High


But the real kicker is this.

1680x1050 DX10 Very High




Other observations : GPU VRM Amps have gone down by 5Amps from 8.8 beta to 8.9beta for idle GPU.

For on load GPU its gone down by 8-9Amps. I havent tested system load yet. Will do that if time permits tonight

Warning : The results here on my system and may not duplicate on your system. This is beta driver. Treat it like beta.
Download Link Vista (both x64/x86) : MEGAUPLOAD - The leading online storage and file delivery service

Download Link XP (both x64/x86): MEGAUPLOAD - The leading online storage and file delivery service