At least there is plenty of speculation to go around now about the future of Aperture. It doesn't sound like its quite dead, yet.
Consider the possibility that the next Aperture will be even more optimized for splitting off processing to the GPU. And then look at the GPU powerhouse the new Mac Pro will be.
It may not be hard to imagine an Apple pro user event this fall with the Mac Pro, upgraded MacBook Pro Retina models (with Thunderbolt 2), FCP X and Aperture (X?). If desktop retina displays could be available by then, a Mac Pro running the new Aperture (and FCP X) on a pair of such displays might well run circles around Lightroom, and the rest of the competition, making a powerful "show the pros" presentation opportunity for Apple.