Because I've seen some confused users, the symbols zip is for debugging purposes, you don't need it if you don't intend to do kernel debugging with a USB Gecko.
Now for the release notes:
- Bug in GDI drivers fixed, horizontal scrolling in notepad (for example) now works correctly
Additionally, the main news:
- The DirectX distribution has been updated to include DirectDraw 7 and Direct3D 7, working under NT 4!
It has been tested with some older PopCap games (~2002 era) which work fine (running the game executable directly, the ~2007-era copy protection wrapper uses functions introduced in win2000 and does not work), screenshots here are frame grab from my wii through a capture device:
As usual, your mileage may vary, some games may not work, may have too low framerate to be playable, may need additional patches etc.