Just want to let you know that I'm happy with v6.90.002.
My current setup is 4x rpi-2, one of them has a nfs image dir shared and mysql server, the other rpi's mount the rootfs at boottime (boot=NFS and disk=NFS option in cmdline.txt). A TvHeadend plugin is used to playback recordings from the DVR PC.
Upgrade from openelec 6.0.1 was smooth, everything working ok!