Full list can be viewed here:
Sale lasts for 14 days.

Sale hasn’t officially been announced yet, but is active on the website/on the Xbox marketplace.
A lot of big games on sale including Watch Dogs Legion already: … verviewtab
NBA and Avengers are half off at $39.99. NHL, Fifa and Madden are 40% off at $47.99 and Star Wars Squadrons is $32.99
Will update post with links/full list when they actually release it.
-Avengers: $39.99 … verviewtab
-NBA 2K21: $39.99
-Dark Souls Remastered: $14.99
-NFS Hot Pursuit Remastered: $41.21
-Watch Dogs Legion and AC Valhalla Bundle: $121.17 (17% off)
-Crash 4: $51.99
-CTR Nitro Fueled: $17.49
-SR3 Remastered: $32.99