It was announced to be released between 17th-19th in the event calendar.
17th - 19th Nova Class Ship - "Rhode Island" Variant
Why did you expect it being released today?
It was originally listed as 4th to 6th. Then 10th to 12th, now 17th to 19th.
We will be bringing down Star Trek Online on 8.11.2011 from 3:00AM to 7:00AM PDT (1000 to 1400 UTC) in order to perform general system maintenance and apply a new patch. We will provide an update once the maintenance has been completed.
It's UTC 14:30, the server is still down and no new informations?
look what I've found in the Dev's section:
The ten Unique Particle Traces now have their own icons.