Well, not really.
On Tuesday afternoon, the official Dr. Horrible Twitter account posted a link to a video game-styled recreation of Dr. Horrible's Sing-Along Blog. 8-bit artist and musician Doctor Octoroc created the tribute in three parts and his eight and a half-minute interpretation of Act I is currently available on his website as a high-quality flash video and on YouTube. He's been working on the project since January and says he working on Acts II and III but doesn't know when they'll be finished.
If Joss Whedon ever releases a Dr. Horrible video game (and he should), Doc Oct's the first one he should call.
Watch the video after the jump.