Jester David
Hero
Why do so many people just assume that every gamer will check the Wizards site and always know about these updates? Not all gamers are obsessives. Not all gamers are as connected to the net as the hardcore plugged-in types that frequent D&D forums in the middle of a weekday. Besides, what they've released is playtest material, not the final drafts. Look at the Pscionics... there's what, five levels of progression there. The thing's clearly not finished. There would be more, new spells and items, fully fleshed out progression, oh... and art. There's a lot that can be done to pad out the pages.
Very true. However, a not-insignificant percentage does check the D&D site, or is directed to the site by sites like this, Twitter, the Dragon+ app, Facebook, and the like.
And those non-obsessive gamers might also not be interested in buying a new book, since not every gamer buys accessories. Assuming they even know there is a new book: if they're not checking the website they won't know a book has been released.