The 3090's replacing it, even though the Titans would have their own driver packages?
I saw Linus' review of the 3090(there's that notable double take at the SpecViewperf bench followed by a statement from Nvidia), as well as a certain "You're being misled" video by Jim(formerly of AdoredTV), which probably wasn't well received.
The 3090 may as well be the true 3080Ti, and the 3080Ti that some people are looking forward to is actually a 3080 Super.
Previous xx90s, GTX 590 and 690, were dual gpu. 3090 isn't - not to say they couldn't just change what makes a xx90 on a whim, but it's been awhile since the naming popped up. Why xx90 now?