He's still looking a bit pink.
Today Sega released more gameplay of Flying Battery Zone and this time we're able to see Knuckles peruse through Flying Battery in a 1 minute video shown below (plus screenshots including Sonic and Tails).
Tue Dec 5, 2023 | Out Now!
Wed Dec 6, 2023 | Out Now!
Wed Jan 3, 2024 | 23 d
Thu Jan 11, 2024 | 31 d
Wed Jan 17, 2024 | 37 d
Wed Feb 21, 2024 | 72 d
Early 2024 | TBA
Fri Dec 20, 2024 | 375 d