Currently, few details are known about this episode, as it has just finished filming. "Enemy Starfleet" was released online on April 15, 2011 and for download on April 22, 2011. The guest cast member for this episode is Star Trek alumnus Barbara Luna from the TOS episode "Mirror, Mirror".[1] In addition, two of the principal roles have been re-cast. Jonathan Zungre will take over for Andy Bray as Pavel Chekov[2], and J.T. Tepnepa will take over for John Lim as Hikaru Sulu[3].