What will I be doing on DXR? First and foremost, I will be making it easier to run DXR on anything that is not Mozilla. Or anything that is Mozilla, for that matter. This will be done by cleanly separating the build/instrumentation steps from the rest of DXR. In other words, setting CC/CXX/LD/etc. should be all you need to do build your program.
After that, I will be working on using Clang to get information instead of using gcc+dehydra. If I understand the current Apple development process, supporting clang is essential to supporting Mac OS X builds in the future. I will also work on getting IDL and JS support added.
One other thing I want to do is (time permitting) to get DXR to represent the results of different builds, so that you can get results other than just the current Linux build. I have a list of other ideas to play around with, but I'll leave that for later, since I don't know if I'll time to start them or not.
Don't expect dxr.mozilla.org to see all of the new features immediately. I'll update when I feel like it (i.e., I see enough stability to do it), and it's easier for me to work more locally on my laptop. I also find it easier to do rapid updates on a smaller project than Mozilla which takes quite some time to do clobber rebuilds; I don't know which project(s) I'll be using for all of my work yet, so don't bother asking.