While going through Hulu and watching some of the latest original web series, Tubefilter News has discovered that Dr. Horrible’s Sing-Along Blog is back on Hulu for free, this time in one piece as a 42-minute feature. This release comes shortly after the rumors we reported on last week were confirmed – it was announced at Comic-Con that there will, in fact, be at least a fourth part (sequel) of Dr. Horrible. “The idea is that there will be another part,” said creator Joss Whedon at the conference while interrupted by huge cheers, “so we’re not gonna tell you about it yet.”

Are the two events related? It’s unclear at the moment, but in the meanwhile, we’ll do the only responsible thing we can, and bring you all 42 great minutes of Dr. Horrible’s Sing-Along Blog.

Update: TechCrunch has confirmed that the Dr. Horrible is now viewable to an international audience via Hulu. The question is: how long will it stay up? You can read Joss’s reasoning on the official Hulu blog.

Dr. Horrible’s Sing-Along Blog (Amazon.com Exclusive)