Hobie, Snowy, and the rest of the team over at Dagger did put a ton of time into the new Agents. I think, if the oportunity presents itself, that you would find the Agent to be one of the more roomy and comfortable playboats to ever hit the market. The 6.2 can handle such a wide range of people and dimentions of paddlers, while the 6.4 gives BIG guys a comfortable platform like never before. Even more amazingly, at 5'10 and 160lbs, I can sit and paddle in a 6.0 as long as I'd like. What really put me over the top was sitting in the 6.2 with my CREEKING SHOES on (not booties) and still having PLENTY of footspace. Thankfully, you also do not short yourself on performance by being in these "bigger" boats. On the performance end, well, it's pretty sick and I think the boats results speak for themselves thus far.
As for changing constantly it seems to me like Dagger, along with most major manufacturers, offers a new playboat design every 2-3 years. The Crazy 88 has been around for a couple, then there was the Kingpin prior to that, and so on. Each boat was a change, but a positive one towards a higher performing, safer, and more comfortable package. Sharing technologies such as the Roto-Seat is a good idea as synergies such as that will keep both companies afloat in this competitive market. However, I don't think you're going to see the same hull design from an Agent on this years Projects, nor will you find the accompanying comfort that comes with it.
Hopefully you'll get the opportunity to sit in one and see what all the hoopla is about.