Same issues here.
From the logs it seems like there are some conflicting packages (another appliance preventing the TV and Movies appliance from loading):
Jan 8 00:36:21 AppleTV kernel[0]: IOReturn AppleRGBOUT::set_display_device_gated(uint32_t), 2
Jan 8 00:36:21 AppleTV kernel[0]: Redundant call to IOReturn AppleRGBOUT::set_digital_out_mode_gated(uint32_t, uint32_t) 49 15
Jan 8 00:36:21 AppleTV kernel[0]: [000000.086887]: IODPAudioDriver::message:(0x8579d000) Audio Link started
Jan 8 00:36:21 AppleTV kernel[0]: AppleRGBOUT, capabilities:supportsMirroring=0
Jan 8 00:36:22: — last message repeated 1 time —
Jan 8 00:36:22 AppleTV AppleTV[375]: NOTE: Currently the TV and Movie appliances break other appliances in 4.4, disabling!!!
Jan 8 00:36:22 AppleTV AppleTV[375]: Appliance com.apple.frontrow.appliance.music not loaded because it doesn’t have any categories.
Jan 8 00:36:22 AppleTV AppleTV[375]: NOTE: Currently the TV and Movie appliances break other appliances in 4.4, disabling!!!
Jan 8 00:36:22 AppleTV AppleTV[375]: NITOTV INITIALIZE
Jan 8 00:36:22 AppleTV AppleTV[375]: after sleep
Jan 8 00:36:23 AppleTV AppleTV[375]: +[<ATVSWUpdateCheckTask: 0x3f1ad93c> _shouldPerformCheck]
Jan 8 00:36:23 AppleTV AppleTV[375]: NOTE: Currently the TV and Movie appliances break other appliances in 4.4, disabling!!!
Jan 8 00:36:23 AppleTV AppleTV[375]: Appliance com.apple.frontrow.appliance.music not loaded because it doesn’t have any categories.
Jan 8 00:36:23 AppleTV AppleTV[375]: NOTE: Currently the TV and Movie appliances break other appliances in 4.4, disabling!!!
Jan 8 00:36:23 AppleTV AppleTV[375]: PM: Set PM idle time to 15 seconds.
Jan 8 00:36:23 AppleTV AppleTV[375]: PM: Set PM assertion to hold off idle sleep.
Jan 8 00:36:23 AppleTV AppleTV[375]: PM: Set PM assertion to enable idle sleep.