FiringSquad.com confirmed today through Pete Hines that Bethesda Softworks, the official licensee of the Star Trek game franchise, and sister company Zenimax Online Studios are not interested nor pursuing the Star Trek Online IP:
Hines [...] stated that Bethesda Softworks's sister company, the new MMO based developer ZeniMax Online Studios, will not be taking over the development of Star Trek Online, the long-in-development MMO that has recently been let go by its now former developer Perpetual Entertainment. Hines told us, "I don't believe that is anything that we or ZOS is interested in or actively pursuing."
The fate of Star Trek Online is still a mystery with Cryptic Studios hiring ex-Perpetual employees minus the STO license.