http://phantasystaruniverse.jp/event/2nd_anniversary/

The official site for the upcoming Japanese 2nd Anniversary Thanks Festa has just opened! This event will begin in the end of August (either August 21 or 28), and will be bringing back Holupe Dence's VR training program. Forgive the rushed job here; I've got to get ready for work, but if I have a chance when I get to the office, I'll add anything I've missed.

The event missions are "The Protectors Gamma" and "The Protectors Delta." Think of them as AOTI only versions of last year's Alpha and Beta. The event will feature increased rare drop rates, increased enemy EXP payout, multiple boss battles and (as such) 2x boss containers. Also, the site says that the exchange mission "Desert City Armory" will receive an update during the event.