The next release of pkgsrc, 2010Q3, is due out Oct. 1st. DragonFly 2.8 is going to be out soon after. I stopped the automatic builds of pkgsrc in the various places I'm building it, as I don't think there's going to be any changes to really catch at this point.
So, I expect to have pkgsrc-2010Q3 packages for 2.8 about a week after 2.8 comes out, if all goes well. I'm not planning (unless 2.8 is delayed significantly) to build pkgsrc-2010Q3 on DragonFly 2.6, since it'll probably finish right as 2.8 comes out. If this is a problem for anyone, tell me. You can always build the packages yourself if you're staying on 2.6 for a while, but 2.8 looks to be so jam-packed I wouldn't want to wait.