We are a affiliation of some people that wants to open the Rigol oscilloscopes for new software and the open source community. We know that switching the bandwith from 50MHz to 100MHz is cool, but not the only possible improvement we can do.
Actually this wiki is relatively empty, you can only find the toolchain, some schematics and general information. Hope this will change in the near future. If you want write howto's, add your informations or have another rigol related project, write to krater to get a wiki account.
If you want to write your own software or only ever wanted to play pong on your Rigol, the best startpoint is to read the installation howto for the toolchain, patch your firmware and play around with the examples.