(It should be noted that this isn't the classic TSR that created D&D and several other RPGs, this is the 'new' TSR founded last year by Gary Gygax's son.)
NuTSR is trying to launch a new edition of Star Frontiers, an updated version of the old Star Frontiers game that never quite caught on outside of a few small circles, with a lot of content being recycled for Spelljammer.
WotC is also suing them because the new Star Frontiers has some pretty questionable stuff in it that would reflect poorly on them. Wizards says that people would think they publish the game, and that releasing it would damage their information.
(Questionable things include a Negro subrace with "tall, thick bodied, dark skinned even purple dark, brown-eyed race with large strength, average intelligence" and a max intelligence of 9. and a Nordic subrace described as "Tall, blonde, blue-eyed race with exceptional attributes and powers" with minimal stats of 13 in any category.)
To quote, "races in SFNG are not unlike races in the real world. Some are better at certain things than others, and some races are superior than others."
someone in the comments there points out my stance on the whole thing, which is "this might be the only time i've ever found myself rooting for the big name to murder the little guy in court over anything"
This is on top of NuTSR's lawuit, which, as far as I know, is still ongoing, seeking the rights to TSR properties that Wizards has 'abandoned' and to force Wizards to remove the disclaimer they added to all old D&D properties.
(And it's true, not all of them were, but that doesn't change that a goodly chunk of old TSR products have a lot of unfortunate things baked into them and it's easier to go "Some of these products contain material that don't reflect our current values" on everything than to hunt down each and every example.)
Not... sure how I feel about this, though. They own it, and it's one thing to update newer material to reflect current values, but changing older stuff instead of just going "Look, this was made in a different time and doesn't match our current values" feels off.
But I haven't heard about these changes before, and WotC would make a big deal about these updates to better market older material, so maybe the lawsuit's just phrasing it weird.
today is a weird day. I'm also siding with Disney if they use heavy copyright enforcement to shut down certain fan-made remixes of The Little Mermaid trailer
They own it, and it's one thing to update newer material to reflect current values, but changing older stuff instead of just going "Look, this was made in a different time and doesn't match our current values" feels off.