I finally committed the new terrain method based upon the GeoMipMap algorithm into cvs today. The speed looks very nice.
Someone also has been working on a new sound system for the engine and that was recently committed to cvs by Mattias, with some changes. The sound system originally only worked with DirectSound, but Mattias added basic support for ALSA as well. I have not looked at the sound device code yet, but I'm interested in seeing if we could add 3D spatial sound positioning using DirectSound and OpenAL.
I think we're releasing 0.8.0 release tomorrow.