According to the VGX (which was total crap btw...), Bethesda confirmed that the 2299 site was just a hoax, set up by some polish dude... I think it was polish? Anyways, the who is irrelevant.
That said, they've got their hands full with TESO right now. So don't expect anything any time soon. Taking that into consideration, of course there will be a new Fallout. Eventually.... Since when isn't there a new Fallout? lol