No, if you haven't noticed, eveyone except the soldier seems to only get one type of grenade. There are other abilities unique to each class as well. Like soldier's handing out ammo and specialty with explosives, medics healing and reviving, engineer's weapon buffs and turrents, and the operative's hacking, playing dead, etc....
It was in one of the videos. The guy, who was an Operative, used one of his skills to turn his regular grenade into a sticky bomb. I assume the other grenade-type skills work in much the same way. You use the skill to modify the grenade, in other words. Soldiers probably get a bunch of offensive grenade types, and a lot more variety than the other classes, but that doesn't mean that the other classes don't get any special grenades. They've already told us that Medics get the Lazerus grenade. I just figure that if Medics get any kind of poison it might also be in grenade form.
Do we know any other buffs for the medic besides health buffs. Maybe weapons or something. I know he is a support player but I think the medic should have 1 or 2 offensive buffs, maybe for laying down covering fire or some such, you know, like a fire rate increase or something.
Fire rate would be something for Engineers to modify, as it's strictly a gun trait, not a player trait. Medics could, however, hand out buffs that increase reload speed, or movement speed, or melee damage. Err...maybe not melee damage. Not sure how that would work with the melee system they've got.