Blizzard Entertainment introduced the new PvP Honor Talent System in World of Warcraft: Legion (Alpha build 18.104.22.16855) on May 5, 2016. It doesn’t work exactly like the normal PvE Talents System where a row is unlocked when you reach a specific level.
Instead, you unlock one talent at a time, as you level up in the Honor System. It feels a lot like the Guild Perks system where you unlocked a perk as you earned reputation and level up ranks. You must be level 110 in order to access the Honor Talents.