I was watching a X-Wing Regionals, and the announcer described a Bounty hunter as a Firespray II, with out aux fire arcs. Did I hear that correctly?

There was a Slave 2 in the comics, but it wasn't a Firespray. I doubt FFG would ever make that one, it's fugly.

It's called a pursuer class, the Slave II. After Boba escaped the Sarlacc, Slave I was impounded by the rebels; he used Slave II until it was wrecked over the world Byss, and he jail broke his old ship.