In 2014, due to the growth of passenger traffic on the routes connecting urban stations to airports, Aeroexpress has signed a contract with Stadler AG: a contract for production of 25 double-deck Stadler KISS family—16 4-car set and 9 6-car version.

According to the production plan, the first three trains will be fully assembled in Altenrhein's research and development center of Stadler.

For the first time, in early February 2014, the body of the motor car trains for the future was presented at the plant in Altenrhein.

Later, due to lack of funds caused by the decline of the ruble against the euro, Aeroexpress has further delayed the purchase of new electric trains.

In the period 2015–16, the gradual introduction of the trains in regular operation is planned on the Moscow Railway as Aeroexpress trains from Belorussky, Kievsky and Paveletsky railway stations to airports Sheremetyevo, Vnukovo and Domodedovo.