My theory: There will be a Plarail Real Class Shinkansen 200 series (H sets) in the future, as it’s also similar to 100 series, plus a few modifications to accomodate Eastern Japan snowy weather.
AND/OR another 100 Series, but with the “fresh green” Kodama livery instead.
Plarail Real Class like to release similar trains with different liveries (Limited Express Series 185 - 3 trains, Limited Express Series 485 - 3 trains, Commuter Train Series 201 - 3 trains, etc.) so it’s possible Shinkansen 100 series would also be given this treatment, given those variants.