SPOILERS for next LockboxI put it twice, so don't blame me if you didn't want to know.
According to some grey hats who hacked the game code, the next lockbox is Xindi, from Star Trek Enterprise. The standard mix of escort (Reptilian) and big ship (a carrier this time, Aquatic race), and apparently a Xindi Boff in the lobi store, plus some hints as to the usual rest of the mix.
The same site also has some audio files that might be from the big expansion planned for this winter. Link below, and again spoilers, so don't say I didn't warn you.
http://iqfleet.org/private/leaks
Also, a reminder, you can be banned for talking about stuff hacked from the game code on the official forums. Not that it stops people, but you know.
As for what I think, eh, something to spend EC on if the ships are any good. But for those wanting end level ships from lower levels without being in a fleet or blowing money, the mirror universe ships are golden. Sooner or later, I'm sure that I'll be picking up a mirror D7 from one box.
I won't fight you Atton.
I don't care, I just want you to die.
(Disciple and Atton KOTOR2)