In the past, generally the even numbered generations give us less amounts of new pokemon, but more features and big changes, and cross gen evo's. (Johto gave us breeding, two new types, Sinnoh gave us phys/special split, introduction of online capabilities, etc) while the odd numbered ones give us massive amounts of new pokemon, and generally don't allow you to use ones from older regions till the post game. (Hoenn and Unova were almost "reboot" styled in a sense).
Kalos seems to have followed this tradition (except, instead of cross gen evo's we got mega evolutions).
Do you feel like S/M will stick to this, and give us a large amount of new pokemon without relating to the older gens much?