Aprilia World Superbike rider Lorenzo Savadori has been picked up by Gresini – which runs the Italian manufacturer's MotoGP effort – to partner the previously-confirmed Matteo Ferrari in a two-bike effort.
The third race of the MotoE season at Sachsenring clashes with the Superbike round at Donington, but Savadori looks unlikely to have a ride in the latter next year - as the Shaun Muir Racing team that ran Aprilia's team in the series has opted for a BMW tie-up and an all-new line-up instead.
Sometime Supersport race winner Niki Tuuli, who contested a part-time Moto2 schedule this year, will lead the line for Ajo Motorsport, while 19-year-old former Red Bull Rookies Cup regular Mattia Casadei will enter with Paolo Simoncelli's SIC58 Squadra Corse team.
It has also been confirmed that the inaugural season's final round, set for Misano in September, will be a double-header, making for a total of six races in the campaign.
The first MotoE collective test will take place on November 23-25 alongside Moto2, with three 30-minute sessions designated for the riders on each day.