Sonic Xtreme Blueprints have been found and have been uploaded to my website Sonic PC
Source: Sonic PC
You heard me right, Sega Smash Pack 2 [Featuring Sonic 2 and Flicky] and Sonic CD have been dumped, and they don't require emulators.
From The DaNz WeBz Message Board: Sega Smash Pack 2 & Sonic CD for you all! -------------------------------------------------------------------------------- http://www.gibnynex.gi/home/danny/roms/warez/segasmashpack2.zip http://www.gibnynex.gi/home/danny/roms/warez/scd.zip
Dan has also dumped the Sonic R PC version and you can find it at sonicroms.org