So, Spider-Man 3 is long finished being edited... has anyone heard if the Grindhouse guys are still working on restorations and special edition DVDs? Is Pieces still coming? A definitive Cat In the Brain? Or have they given up because every Tarantino coattails-rider has run off with their name?

No, they are still alive, and still putting releases together. Moreover, they are working on stanching the flow of ripoff usages - BCI Eclipse has announced they will no longer use "Welcome to the Grindhouse" for an umbrella title on their exploitation releases after being told to cease and desist, and other usurpers have been served notice.

Bob Murawski right now is editing Kathryn Bigelow's new film, so that is keeping things a little slow for them right now. Stay faithful.