I finally received the new Olympus 45/1.8 micro 4/3 lens! My first impressions are very favorable. The body is plastic but looks like metal and feels buttery smooth. I love that big focusing ring. It looks great on my E-PL2 but I think I would probably have preferred a black body instead of the silver to maintain a slightly lower 'profile'. Side by side tests against my beloved Voigtlander will be done tomorrow.
(Olympus E-PL1 with Panasonic 20/1.7 lens - shot at ISO 500, f2.8 at 0.8 secs (handheld at almost a second, that's why I love the Olympus in body stabilization so much))