Given that we're getting micromasters and "battlemasters" (which are likely targetmasters and maybe armor related masters) my guess is the three leaders will incorporate masters too.
Which means we've got a pretty good shot at star saber, deathsaurus, but i doubt we'll get a leader class optimus this time around. We've gotten so many recently. For the last one, I'm thinking a star saber retool into thunderwing, or an out of left field choice and go with leader scorponok.
For the 6 voyagers, an optimus and Megatron are a given, and i suspect we'll get snaptrap and apeface, as well as springer and sandstorm to round out the remaining triple changers.
14 deluxes, I'd say pointblank, sureshot, and crosshairs are a given, along with wheeljack, jazz, bumblebee, the mirage v impactor 2 pack, three decepticon tetra jets, not sure about the last 3