Lots of new stuff coming on next maintenance.
Story/Daily/AW orb drop boost 1.5x and AW orb drop 2x
Majin Vepar event (2 week event)
Higher difficulty missions added after June 30th
Silver units now have max level of 55 + an additional skill
I have no idea how well I'll do with Vepar's event, considering I didn't do much with the other two. Silver units be getting stronger with 5 more levels and an extra skill. I believe Alissa gains +range.