On GameDaily you can find the first of what is probably going to be a series of previews about the Tribes of the East expansion this Summer. The author explains to a general audience what the new features of the game are, without going into the details -- therefore, anyone who kept an eye on this page won't learn anything. Unless you didn't know that Tribes will be a standalone game:

"Many expansion packs to strategy games end up so large they could be considered entire games, and Tribes of the East looks like it fits that bill. Ubisoft and developer Nival must have realized this, as they decided to make the game a special form of expansion in the vein of Dawn of War: Dark Crusade. Tribes of the East will be both a stand-alone game which can be purchased and played by itself, or an expansion to an existing installation of Heroes V. This gives newcomers a chance to get a feel for the game and its new additions before deciding to purchase the entire Heroes V chronicle."

Of course, the Shadow of Death was packaged this way as well, back in 2000.