The guys at XDA has done it again. A developer named deeper-blue has been working on this and now he has released the Honeycomb SDK preview port for the Nook Color and is available to download. Though this Honeycomb port could be installed on the 7 inch Nook Color, don’t expect all things to work perfectly.
This is what the developer says about the working and not working features :
-Sound (sadly! Despite my efforts the last hours I didn’t get it working properly yet)
-DSP e.g. no hardware video decoding
Be careful while playing around with it! The 466mb image requires 4gb SD card space.
Download Android 3.0 Honeycomb SDK port for Nook Color from here