Although this set is almost certainly something none of us will be interested in, I'll mention it here anyway.
43212 Disney Birthday Train is rumored to launch April 1 for €39.99 / $39.99 with 200 pieces and 6 Disney characters.
Since the price and piece count are so low (and because it's a Disney set) it's unlikely to be any version of realistic, but it'll still be interesting to see what it looks like.
Source: https://www.brickfanatics.com/lego-43212-disney-train-rumoured-details