I spent some time browsing the latest results and news, which are summarized as follows:
1. Many people started to access framebuffer. At least one horizontal scroll can appear soon.
2. Phil Harrison still insists rsx needs to be protected
Http://interviews.slashdot.org/article.pl? SID = 07/04/20/0641209
3. hypervisor APIs are being extracted step by step from Linux kernel.
4. Someone simply writes the boot loader and can call the hypervisor API.
Http://forums.ps2dev.org/viewtopic.php? T = 8333
5. By compiling the kernel and adding a new MDT module, you can access and use the MB memory.
Http://forums.ps2dev.org/viewtopic.php? T = 8267
6. terrasoft (the company that released ydl) may be working on the SPU-based Mesa implementation. It seems that it is not close to harmony.
Http://forum.beyond3d.com/showthread.php? T = 39606
7. unsolo has implemented the SPU-based yuv2rgb color space conversion, which provides the most basic support for the optimal mediaplayer.
Http://forums.ps2dev.org/viewtopic.php? T = 8194
8. ralferoo implements a python-bind, similar to a luaplayer game library, which allows you to easily use scripts to manipulate Core Components and write logic.