I for one are always gonna be excited for new release from Bachmann especially for the Thomas and Friends range I understand that this might sound repetitive but here are some of the upcoming announcements

HO Scale
Stepney
Daisy
BoCo
Well Wagon Reintroduction (labeled something like Search & Repair Center or Sodor Steamworks)
CGI Milk tanker Redesign
CGI Fuel Tanker Redesign
Toffee Tanker
Chocolate Tanker
Troublesome truck number 6
Resin buildings

Narrow Gauge

Peter Sam
Sir Handel
Brakevans (red and blue)
Brakedown Crane and flatbed (from Season 4)

N scale

Edward
James
Tankers
Red coaches

Large Scale

Edward
Diesel (With Grumpy Face)
Henrietta (with face)
Red coaches (Composite and Brake)
Flatbed trucks (With Boxes)

Personally I would like to see a accurate television series model of Stepney In the H0 Range so that Thomas fans old and new can learn about the background as Stepney as a character and along with having him come out on the 75th anniversary of the Thomas and Friends franchise in 2020 but for the year after I believe Ryan should come out in 2021 the following year.