Note to self: Subscribe to PC Gamer.
My, the Vulcan on the cover has prominent... ears.

Here's a shot I found online (from a skyscrapercity.com forum, posted by someone who goes by VaastruShasta) that compares the Star Trek Online uniforms with the ones that were used in the Countdown comic. They're pretty much the same, but in both cases less... embellished.
http://images4.wikia.nocookie.net/startrek/images/a/a1/Countdown_Online_comparison.jpg (potential SPOILERS for Countdown, if you haven' read it.)
They feel more like Star Trek uniforms here, but I still feel they should stay in the domain of the 25th Century.
The game takes place during 2409, which is right smack in the middle of the future timelines we saw in "All Good Things," "The Visitor" and "Endgame," so it would have been cool if the game used the "future uniforms" featured in those episodes, but I guess they're not cool enough. Since all three of those future timelines were changed it doesn't really matter, but since they kept popping up in the future for ALL the shows, I figure they're destined to happen eventually.
If other media accepts that the Countdown/Online uniforms are being used next, then I suppose the "future" uniforms could always come after it. (Or not at all, sigh.)