Call of the Scarab Micro-Event

[Poisonenvy]

This event is one of several that are new to this latest patch.  It lasts only a few days (over the weekend) and encourages horde and alliance to compete to collect commendations for their faction - the faction with the most commendations by the end will have their flag fly over the area for a full year!

You can read more about it on wowhead.