It's on espoo.fi somewhere. It has also been in the newspapers and IIRC there has been (maybe still is) an exhibition (kind of) somewhere (might've been in Tapiola). Try a big library like Sello or Iso Omena, and ask one of the librarians to help you. They like being asked difficult questions

and most of them speak v.good English. Next door to the library in Iso Omena is the Espoo municipality services centre. You could also ask in there I believe there is one in Leppävaara too). They have plenty of leaflets lining the walls, maybe one on the metro.