All Wizardry games are turn-based to my knowledge.
If we expand the criteria to lesser known games (some indie, some not), I'd be remiss not to mention Spiderweb Software.
Their offerings include the Avernum series, the Geneforge series and the Avadon series, to name the more well known ones. I'm very partial to the Geneforge games.
On a very basic level, the Avernum series can be seen as reminiscent of games like Ultima IV, while the Geneforge series is a bit more like Fallout or Arcanum. Avadon on the other hand, is probably a little like what BioWare games like KotOR or Dragon Age would look like if it were a turn-based affair. The similarities are not in the settings, and the writing in all these games are fairly basic (not bad, basic) but I'm talking more about how the world design and player agency are handled.

Avadon
There's also the King's Bounty series of games from company 1C (which was if I'm not mistaken, the place that Seival works/worked at). King's Bounty is a turn based strategy with light RPG elements. Games like Expedition: Conquistador were greatly influenced by it's design (though it is my opinion that E:C was a more interesting and much better written game).

King's Bounty: Dark Side (expansion)
Then, there's Escalon Book series of games. A decidedly 'hardcore old-school RPG' with single character and a large open world to explore, much like the old Fallout games. Not in the same realm of quality or freedom of interactions, but it has it's merits.
I also note that the Silent Storm games have not been mentioned yet. Why, I'll never know. Silent Storm is about a squad of Allied or Axis troops in WW2 embarking on a series of missions. The game has a fantastically destructible environment, which can lead to interesting gameplay experiences, such as breaking down doors, blowing holes in walls (lockpicking silence vs shock and awe explosive entry), and even destroying buildings altogether. As a game concept, it's reminiscent of Valkyria Chronicles, minus the third person aspect to the gameplay and the anime motif.

S2: Silent Storm
And finally, a little off the beaten track a little, we have Blood Bowl. It's what happens if you mix Warhammer with American Football/Gridiron, and the video game is a pretty faithful adaptation of the original board game. But at it's core, the video game is quite clearly a strategy-rpg if you play the campaign modes. You have a team with characters that you level up, they gain perks over time and the more you win games (through a mixture of luck and strong tactical sense), the more powerful they become in comparison to the competition. Pretty straight forward.
There are plenty of games out there. But not many of them are going to have the production values of the new XCOM.
As for upcoming games, I am going to throw a few names out there:
Torment: Tides of Numenera - The spiritual successor of Planescape: Torment, this narrative heavy turn based RPG is being developed by InXile Entertainment, the developers of Wasteland 2, along with the input of developers at Obsidian Entertainment like Chris Avellone (lead writer of PS:T).
Dead State - A turn based zombie RPG with survival management elements, this is an independent project by DoubleBear, led by Brian Mitsoda of Vampire: The Masquerade - Bloodlines fame.
Legends of Eisenwald - A strategy with light RPG elements with hex grid combat, Legends of Eisenwald is set in a low-magic medieval fantasy world. Featuring a large open world and emphasis on exploration, it is a bit like if Mount and Blade were turn based.
Underrail - This Fallout-influenced turn based RPG is set in a dystopian underground world. Oozing atmosphere and freedom of character playstyle, it may be one to look out for in the future.
There are more too, plenty more.