Razz,
I was not buying Dragon for the umpteenth crappy prestige class (of which something like 2000+ are already available from WotC books). I was buying it for the articles I cared about (like Demonomicon or Core Beliefs) written by people I cared about (like... most of the regular writers). I do not expect to find anything approaching that level of content on WotC's site. And even if they do offer them, articles of that length are going to be painful to read on a computer screen, and, if printed out, will look like crap when compared to actual Dragon articles.
For those of you who want even more feats, prestige classes, spells, magic items, and so on, WotC "digital initiative" will probably be great. For the rest, it's probably a lose-lose situation.