I am unable to output to this screen (which works well with the latest Raspbian-Wheezy release). I made all updates/upgrades, a firmware update (sudo wget://www.itontec.com /mz61581-overlay.dtb) after having removed the old file in /boot/overlays/, made the changes to the 99-fbturbo.conf in xorg-conf.d (fddev /dev/fb1), in short everything that worked with Raspbian-Wheezy.
Nothing helps, the TFT remains black and Retropie + ES boot into HDMI.
The Raspberry is model Pi2.