Bletchleyite
Veteran Member
Mireo is Siemens new Commuter Train platform designed to replace the Desiro ML
http://www.railwaygazette.com/news/traction-rolling-stock/single-view/view/siemens-to-unveil-mireo-modular-emu-concept.html
http://www.siemens.com/customer-magazine/en/home/specials/innotrans/introducing-the-mireo-family.html
If you read it, though, they say it isn't for the UK - the UK offering is Desiro City.