Yesterday, Runic posted the following message on the official Torchlight II website.
PAX Prime is now just two days away! On August 31st, Friday morning at 9am PDT, Max and Travis will be live on Twitch.TV to talk about the official release date. We are debuting our shiny new trailer, featuring new gameplay from all four classes. We love it. It’s awesome.
We’ll also be holding a Q&A session, and you can add your questions to our forum thread, here. We will answer as many of them as we can during our time slot.
While it will ship for PCs/Windows first, as with the first Torchlight, Runic will be shipping a Mac OS X version after the PC version ships.