Updated the CuBox-i4Pro and DreamPlug to Kernel 4.0-rc2..   No problems with the DreamPlug, and the CuBox just needed the same small patch as for -rc1.. http://rglinuxtech.com/?p=1338

CuBox-i4Pro:

Fedora release 22 (Twenty Two)
Kernel 4.0.0-rc2 on an armv7l (ttymxc0)
................
]# uname -a
Linux rgcubox 4.0.0-rc2 #1 SMP Tue Mar 3 21:35:27 EST 2015 armv7l armv7l armv7l GNU/Linux

DreamPlug:

Fedora release 18 (Spherical Cow)
Kernel 4.0.0-rc2 on an armv5tel (ttyS0)
.........
# uname -a
Linux rgdreamplug 4.0.0-rc2 #1 PREEMPT Tue Mar 3 15:58:13 PST 2015 armv5tel armv5tel armv5tel GNU/Linux

No -rc2 source for the Odroid U3 – yet..

Robert Gadsdon.  March 5, 2015.