Steeply uphill.
For the first time since the release of the d20 license or *maybe* d20 Modern, WotC is on the cutting edge of d20 design (with Star Wars Saga Edition).
In fact, although Saga is much more an evolution than a revolution, it's arguably on the cutting edge of RPG design in general, which would make it the first time WotC has been *there* since Everway.
In terms of D&D products, the Bo9S itself is recent enough to count as a 'recent' high point if you consider it such (I do as well, as far as it goes, although it like the warlock class looks particularly 'in development' next to the Saga force power system).