Cast members working at an attraction aren't really solid sources of information on long-term imagineering projects multiple years out from actually happening. Imagination was actually planned to close at the beginning of this year for an overhaul, but that project was canned (not the first time a plan to overhaul the pavilion has been canned). It even got far enough that cast members in the area were warned and told to prepare, but it didn't end up happening. I personally believe that this comic was probably going to act as a sort of promotional prequel material for the new ride.
The most recent info from trustworthy sources on this forum is that there are no near-future plans change to Imagination. And my idea of "near future" when it comes to Disney projects and their obscenely slow pace at building is anything within a 5 year period. So unless leadership changes for the better soon and someone sensible and talented steps in to save EPCOT, we're a long way out to getting a decent Imagination ride again.