At Gen Con last year there was a rumor that TSR was reforming.
To a lot of people this meant that the fate of Dungeons & Dragons was somehow "hanging" in the balance (don't forget this was sometime before 5th Edition was announced) and the future all things D&D was a little uncertain.
Their first Publication, is to be the wonderfully entitled "Gygax Magazine" - Editor Jayson Elliot let a few tantalizing tidbits out on ENWorld forum -
Hi guys, this is Jayson. I'm the editor for Gygax Magazine.
Gygax Magazine is myself, Ernie Gygax, Luke Gygax, Tim Kask, James Carpio, and Jim Wampler. Our first issue is out in December; since it's not finished yet, we've been pretty quiet about things until it's ready.
Just to address some of the questions, I thought it was best that I leave a reply. We do own the trademark for TSR, and have since December of 2011. We are a new company, not the old TSR, as they were purchased by Wizards in the '90s. The trademark was abandoned about nine years ago, and we registered it in 2011.
We decided the best thing to release first as TSR was a gaming magazine, because we wanted a way to bridge the traditions of the old guard with the awesome new games that are out today.
As Gary's sons Ernie and Luke Gygax are "on board", the new company is free to use the Gygax name for the new magazine!
Luke Gygax goes into some detail about things here.
Tim Krask has a Q&A Thread over at Dragonsfoot here.
I (for one, although I am sure I am not alone in this) am VERY excited!!!