To tide you over 'til then you might want a look at
Enigma: Rising Tide (
Homepage)
It's a good game, as such (WWII naval combat game based primarily on subs vs. surface ships) - you can pilot either surface ships or subs in variours engagements.
(You have a sub campaign and a surface campaign for each of the three sides, for 66 or so missions).
It is an alternate histroy game, though - lusitania wasn't sunk, germany won WWI, and has conquered most of europe including britain. The british government in excile moved to Hong Kong and has allied with Japan.
So you have three sides; america, germany(europe) and the league (britain + japan).
Strangely it works, with a fairly clever story.
It has a few downsides; it does not have high production values, it looks like it could easily be a few years old, although the ship graphics are good.
However it is also planned to be released as a massive multiplayer game, which could be interesting.