[1.2.170] Elemental Pirates? New pet!

That's not what it means by bullet.
The sharks thing is a whole new skill for a whole new class, the "bullet" is just the animation when the skill travels across the screen to hit a monster. The class that uses the sharks may or may not be a pirate even.

As I said before, this could easily be a new skill for a class. Who knows, maybe these skills are the first 5th job skills to come out?

Also, I doubt that the lightning attacks are for a new job. They don't really base attacks for a job around one element, otherwise the person is screwed if they come across a monster strong to the element.

Personally, I'm waiting for the next patch to make any decisions, but if there're new skills, such as the poison equivilant of the new skills, then I'd bet on them being new.