If you go on vacation, there's a risk you might miss an important GW2 press release from ANet. Don't fret, you can check them all on the
Guild Wars 2 Wiki News page.
The relatively slow pace of releases thus far (only 6 so far in June) and nature of the info (basic & fundamental as opposed to highly detailed) is indicative of a game that is a still quite a ways from release, but expect to see the press releases increase significantly as we approach release, perhaps one or more per day.
One thing that caught my eye on this page - It was 42 days between the reveals for the elementalist (April 28) and the warrior (June 9). If that rate holds constant, ANet won't reveal the final class for another 252 days, which is roughly the March 2011 timeframe. Obviously that rate may change, so don't read too much into it.