According to the article above, and announced at E3, there is a CrossFire themed RTS coming out in 2022 called CrossFire: Legion.
"Crossfire, being introduced in various platforms and genres, is growing into a world-class IP, and it is now reimagined as RTS," said Ina Jang, CEO of original Crossfire developer and publisher Smilegate Entertainment. "Crossfire: Legion is not only for the gamers who have previously enjoyed the original Crossfire, but also appeals to any gamer that wants to experience a classic RTS experiences reinvented in a modern time."
In my opinion, it has the CrossFire story in mind, but not the CrossFire style. It seems too techy/advanced roboticy..... The only similarities are the logos and most likely some CrossFire characters appearing. Just like the mobile game CrossFire: WARZONE, has the CrossFire story in mind and maybe some references, but doesn't seem to fit. But then again, we have characters in swimsuits, cat paws as a weapon, and a banana grenade.