New Raspberry Pi firmware & XBMC Frodo RC3

[Pihkal]

What are the fixes/benefits in the new update,except a new firmware version?

Edit: just took a quick look at the rpi-firmware git repo,so if i understand correctly ZRAM and RFKILL support is added.
So that raises 2 questions:

1. Does ZRAM make any noticable difference in performance on a 256MB Pi?
2. Is it enabled by default or should it be enabled somehow?

Greetz