User blog comment:Kogath/Monster Hunter 4 Ultimate for the Nintendo 3DS/@comment-25192100-20140727082744/@comment-17735225-20140727095241

Pretty unlikely. There are like no information whatsoever about Alatreons fought in the game are juvenile form. And if its real, it'll probably going to be extremely annoying to fight.

Seruregiosu flock might be a homage to (or rather, in-game way of showing the lore explained in) one of the 'official' MH novel (note that it is not canon though) which a Lao Shan Lung was followed by a group of Rathalos; which alone provided much difficulty to the guild hunters (Sort of like a flock of crow ominously follow the great beast in hope for corpses). So it should be one of the elder dragons.