Stadler is currently developing new FLIRT versions for Abellio Greater Anglia (electro, diesel and hybrid), especially for the GEML. Among the trains will be an 12-car FLIRT with full 125 mph capability. It looks really awful though. And they´re sadly going to retire the Class 90-sets.
Here are some first renders: http://railcolornews.com/2016/…uk-interior-and-exterior/