very large database of apns (adb shell cat /system/etc/apns-conf.xml)
wifi and bluetooth work, new dialer and everything.
EDIT: yes it has busybox, and apps 2 sd as well. multi-touch too
EDIT2: why are g1 users flashing this? lol. this is 6.0r1, with some modifications for the sapphire. unless you want to report something breaking on the g1 when flashing a SAPPHIRE build, please don't do it. :P