The tidbit that interests me the most is the objective card deck. From what i read, basically every turn, (game or player im unsure) cards are drawn that will change the flow of the game. meant to simulate changes in battlefield conditions, and the ebb and flow of a battle, its also hinted that VPs will be calculated and accumulated on a turn by turn basis, to help stop the last turn objective grab snatching victory/forcing draw we see A LOT of lately.
Another 2 disciplines for powers in the main book, and possibility of another warlord table,
Ive also heard that consolidation into units from combat, and assault from reserve are back, (mainly because of overwatch, apparently altering the BS of overwatch shots if you come from reserve or another combat)
Overall I am excited, 6th has been my favorite edition so far, (i started at end of 3rd) and with the changes proposed (especially the objective cards and such, changing the flow of battle means a massive game changer and makes you really think about what you should do as the game progresses) the Physker phase is good, (ive forgotten when to cast what so many times) and i think they will play out the same as now, just dedicated time to cast any powers, (i think with the threats mentioned for using to many, we may see a drop in power spam actually)
Its early, but its needed. with the ramp up of codex drop, and battle brothers becoming such an OP thing, i say bring it! change is as good as a holiday, hopefully this brings a fresh breath to the game!