Season 7 and the introduction of the brawler mage and the fall of the assassin
Yes the brawler mage,
Mages like

who pack at least some cc or modest dps//burst alongside some neat aoe/dots
Some of the mages with hard cc grabbing
https://lolstatic-a.akamaihd.net/frontpage/apps/prod/preseason-2017/en_US/e8b9fdc1b422a536983bfd583c13deb77ac2146f/assets/img/gameplay/masteries/courage-of-the-colossus.jpg
To beef themselves up even more
Tanks, those with plenty sustain building https://encrypted-tbn2.gstatic.com/images?q=tbn:ANd9GcShQJtsPL9Svsj1R4JvwPs_IPmd9ep46W_DUCbZQ6Kc5AoPp8E4
And using it on their mage alongside possibly bond of stone or courage of colossus
Tanks and juggernauts like
who have good disruptive peeling capabilities with a lot of sustain through health regen
they beef up their mage with knightsvow & bond of stone
Needless to say we will see a similar support/ADC interaction
Expect builds like these
beefing them up
A
might grab 

getting beefy and relying on alternate scalings/basedamage item damage and mastery damage and using freed up space to get more beefy
i expect assassins to utterly fail agains't these strategies
A beefy sustain & peel focused tank beefing up mages, The tanks will probably end up building
Knightsvow + additional regen items like
or maybe even double visage
A beefy tank support beefing up their carry who will probably end up buying shit like

All courtesy of the damage amp up from both current and next season. All and everything is going to be poured into heavy % damage reductions backed up by modest resistances not too much, just enough, and a lot of sustain and health Health sustain and damage reduction is where it's going to be at for beefing up shields will also be big since they are temporary health scaling by damage reduction as well
assassins are in for a hard time next season :P
More than you would think, but you also need to build a decent bit of health to make it decent so you can take away about a third of these at least.