The first phase of testing is nearing completion. (Actually, it's pretty much done.) You can find binaries here as well as the source code if you want to compile your own binaries:
We also have several bugs which have been reported. The umbrella bug report is here:
Now we need your help! You can help us by looking at the bugs listed in the umbrella bug report and seeing if you can fix them, or if they already are fixed, telling us which patch fixed it.
Secondly, you can download the binaries and start compiling things you're interested in. Any issues you come across should be listed in the umbrella bug.
Let's make this the best release LLVM has ever had!
Share and enjoy!