The interest is definitely there, but what will it be like?
A free online magazine? A printed one? If so, it would be similar to Extra Impetus. Also, it would be nice to have extra army-lists or rules in the magazine, but that would put people without access to the mag at a great disadvantage. Somehow... Extra Impetus is already the Imetus Magazine for me.
What I would definitely like is MUCH more eye candy. Its hard to find pics of Impetus armies on the web. DBA or Warhammer you will find a plenty, but if you look for Impetus bases, battle reports or any kind of inspiration, thats pretty rare. Impetus is an eye-candy game, it deserves to show off!
Also, how about the pricing? Can this be low cost, as a magazine should be? I recently bought 2 Mantic Magazines and was very disappointed to get some wallet-sized marketing brochures with almost no value as such. Please, if you do a magazine, make one with real gaming value - not just a meassure to sell your products.
Cheers,
Garf