Because of some internal problems
The Sonic 2 HD Project has been officially discontinued.
Bad news for all Sega and Sonic fans, Sonic 2 HD Project is officially discontinued. The Sonic 2 HD team has officially announced it on the team's Facebook page. Some internal problems like the lost of the code and two of the lead artists is the main problem to continue with the project. The decision was made two months ago, but they decided to release the alpha version of the game as a reward to the inconditional fans of the project.
Remember that there was found also a keylogger in the alpha release of the game, so I think this should be a problem for them also.
Anyway, bad news for us
OFFICIAL SITE: http://www.facebook.com/sonic2hd
NEWS SOURCE: http://sega-addicts.murnaumusic.com/?p=28898
Our thanks to 'Robe24' for this news story!