DI V8s should be on the next gen small blocks. I read from a fairly decent industy publication that year 2009 is supposedly the last scheduled year that any NEW GM product will launch with a GenIV V8. That can be interpreted several ways though. For example (I am making things up here), lets say that there is a 2010 release of a supercharged Z28 model. It is a new trim, but is it technically a new "model"? I would argue "no", it is still the same Camaro, so a port injected 6.2 SC engine would be feasible. All just wild speculation on my part of course. Draw your own conclusions. I am not claiming to know anything from an inside source by any means.
GM has spent a lot of money and time developing the coupe and the vert. The design was pretty much from scrap. I still cant believe they went from concept in Jan/06 to Production in Feb/09. 3 years for a full model change starting from scratch means they were going balls-to-the-wall that whole time. Very impressive. Anyways, getting to my point, my honest opinion is that there wont be a Z28 SC model like some people are hoping - at least not for the first 3yrs. Who knows, I could be proven wrong though. I know one thing for sure, and that is the fact that I wont be sitting around waiting for such a model.
Back to the topic (sorry i got off course). It seems to me that 2010 would be the first possible opportunity for anything to launch with a DI V8. And you can bet that the Corvette or a Caddy would be the first to get it. And if it ends up being the C7 Vette to get it first, then that is quite a ways off.