Found this on BGG about it:
"Likely" to be released in 2007 according to RGG's latest newsletter.
update: I asked Jay and his speedy response...
This is a new stand-alone game - based in the US, instead of France
So seems like early North America is right then. Wonder exactly what period it will be ? Pilgrims, Wild West, ACW, AWI ? Providing its not just a complete port of the current game with new scenery then I reckon this could be good.
Maybe they should do one based around the US/Canada war period hey Gantry, 50 points for burning down the Whitehouse !!!
Oh and just noticed 100 posts woohoooooo