I still expect we'll end up seeing both down together, not at the same time together, but overlap around the end of SSE re-do. This won't be 'Imagination gets the short end', but more 'we can't have both down together too long'.
I've also heard SSE is taking priority over JII lately, probably because it's a more time-sensitive ride about communication that hasn't been touched since... the first iPhone came out? Sheesh.
Imagination rumors have maintained a 'healthy budget' recently, and Inside Out may or may not be moving to another part of EPCOT but it IS penned to move into EPCOT eventually.
I don't expect any of this to be dropped at D23, but the ball may slowly start rolling once Test Track comes up. Don't fret.