oh yeah, it's still very popular. They haven't added any new missions since the last featured series, but they completely redid several of the early ones. The next Featured series is coming soon, and it will be set around DS9. They're also just about to release their new season 4 patch in a day or so.
This patch makes some huge changes to the entire game, too many for me to mention here, but here's a small sampling. They tweaked all of the weapons and many of the powers to make them quicker firing and more responsive. They added an "over the shoulder" shooter style combat mode, with crosshair aiming. Qo'nos has been completely redone, inside and out, with a new open city map. Gorn have been redone to look more realistic. There will be a new fleet action lobby system, set up like the PvP lobby. Borg now adapt to weapons types, and they can assimilate you (which replaces the old protodrone spawning power). Klingons can now access most of the Fed sector blocks (except sirius). Most of the KDF content will be releveled to allow lower characters to play it. You can now put out plasma fires with the fire extinguisher and the Breen series rifle. Coinciding with launch they will have special borg DSEs roaming the low lvl sectors. And that's just the stuff coming out right away, shortly after launch, we'll get the Duty Officer System, which adds an awesome trading card like minigame for your ship's crews, we'll also be getting Open PvP as well. A little further down the road, we'll get new SF and KDF academies and new tutorials.
This is going to be an awesome update for STO, go check it out on the cryptic forums.
