Bards will be getting a new LB in Heavensward.

That said, LBs are still going to be shared by role. The new job-specific LBs are cosmetic only, they will still have the same effect (and only a couple of them are actually going to be introduced in 3.0, with the others added over time). The only reason bards are getting a totally new one is likely because Machinist will need a unique ranged physical LB as well so bards will share with them. Any hopes of some Bard-specific LB won't be happening; it'll be a DPS LB of some kind shared with Machinist.