What else are they supposed to do? Everybody once is 13 games and home-and-home is 26 games .. they have to settle in between somewhere. I would love it to indicate that they're adding more teams but I don't think it tells us anything we don't know.
12 home and away in each 7-team division makes sense and 7 opponents once each for 19 games. Of course, that would make sense. Instead with 18 games they will get 13 le singgames plus 5 with Coach K looking at one permanent rival (UNC) and then 4 games divided among the other 12 teams on a 3 year rotating basis (6 yeard for home and away completion).