No real experience with the 26BH, but just a couple of comments on the 2010. 2010 models will have less fresh water capacity, around 38 gals. In 2011, Jayco upped the fw capacity to around 80 gals by adding a 2nd tank underneath. BUT, the gray and black tank capacities did not change, those are approx 32 gals each in 2010 and up. If you don't stay out in the woods for weeks at a time, no big deal!!!
Along with the larger fresh water capacity, the GVWR went up in 2011. My bet is that all they did was change the specs to account for more water!!!