This same set is in the Lionel catalog released on-line (I think) earlier this week.
I noticed a few days ago when looking something else up on shopdisney.com that the Disney Christmas set from 2 (?) years ago was shown. Turns out there is a bunch of the recent Lionel Disney offerings on Disneyshopping.com! If it means some people see it and may be interested who might never be in a train store, I guess that's a very good thing!
I'm not a fan of the ears either, but since they are not firmly affixed, I may go for the set. As I mentioned in the "2018 Volume 2" thread, I would have liked this and the add-on cars/ billboard set better if they actually showed the "90 years" somewhere rather than just the generic wording. I'm guessing that's either Lionel marketing or Disney driven so it's not linked directly to 2018, but I wouldn't think Disney since they generally do not have any problem whatsoever with selling stuff with anniversary years on it. (60 years for DL, 45 for Magic Kingdom, etc).
The Steam Trains tour is quite an experience, I'd agree! I would guess it will possibly/probably be going on hiatus for a while starting early next year when they temporarily shut down the railroad while they renovate the track over near the new Tron attraction they are building near Space Mountain. (no formal duration was announced, but I'm pretty sure the announcement of the train being under renovation in early 2019 is formal).
Supposedly there will be opportunities to get some good photos with at least one of the trains at Main Street Station during that time, similar to what they did at Disneyland in CA when the train was closed for around a year and a half while they routed the track around the new Star Wars land they are building behind Frontierland and Critter Country out there.
I drifted a bit from your original topic.
-Dave