Firaxis just announced a new addition to the XCOM series in the form of XCOM: Chimera Squad. It takes place 5 years after the events of XCOM 2 and focuses on a specific squad of named human and alien characters trying to maintain the peace in a one of the new cities.

Game Reveal Trailer

Gameplay Trailer

It's currently $10 on steam, presumably since it looks like it was built on the XCOM 2 engine. The sale lasts until May 1st, so you'll have time to wait until some reviews are out before you buy it.

I absolutely loved XCOM 2: War of the Chosen, so this is a nice surprise for me. Some of my friend who have played some of the older XCOMs are comparing it at least thematically to XCOM: Apocalypse

Edit:
@cwagner provided a link to GMG where its currently $9.50

Streaming live here: https://www.youtube.com/watch?v=tVdpOCxRwj4

Announcements/videos:

• Path of Exile 2 - a new seven-act storyline that will be available alongside the original Path of Exile 1 campaign (not a separate game). A 14-minute gameplay preview is available. Not planned to even go into beta until "at least very late 2020".
• Conquerors of the Atlas - 3.9.0 expansion
• Metamorph League
• Mobile version