UPDATE: More unpublished photos are available here: http://www.megaupload.com/?d=0OWDDEIT (Thanks Ision)
IMPORTANT: All those images were taken with a pre-production camera.
More full size samples are available here:
ISO 1600: http://exakta.net/images/stories/Pruebas/E-5-De-up/Oly_E5_GO_001AAA.jpg
ISO 3200: http://exakta.net/images/stories/Pruebas/E-5-De-up/Oly_E5_GO_004AAA.jpg
ISO 6400: http://exakta.net/images/stories/Pruebas/E-5-De-up/Oly_E5_GO_006AAA.jpg
UPDATE: more image smaples here: http://www.hsstudio.com/gallery.html?gallery=E5%20Dynamic (Thanks Edgaras)
Olympus America has a new E-5 page: http://www.olympusamerica.com/cpg_section/product.asp?product=1525
You can preorder the camera at Amazon: Olympus E-5 12.3MP Digital SLR with 3 inch LCD (Body Only)
And do you like those image samples?