Without having it yet officially announced Olympus America does list the new VF-3 viewfinder with full specifications! Here is the official text:

Electronic Viewfinder VF-3 (Silver)
The VF-3 is a compact viewfinder that easily slides onto the accessory port and hot shoe of the Olympus PEN and XZ-1 to provide 100% field of view and .97x magnification. The VF-3, which is compatible with all PENs that have an accessory port, is quite useful for outdoor shooting, low-angle shooting or telephoto shooting.

Specifications:
Resolution: Approx. 920,000 dots
1.00″ (W) x 1.7″ (H) x 1.75″ (D) (25.6mm x 43.5mm x 44.7mm)
Approx. 1.0 oz (30g) without cover
100% field of view
Approx. .97x magnification (-1m¹, 50 mm Macro, at infinity)
Eye-point: Approx. 17.4mm (-1m¹)
Diopter adjustment (-3.0 to +1.0m¹)
Shoe-lock mechanism

As you can see from the roadmap on top Olympus has the plan to release a 50mm macro lens for Micro Four Thirds. We now have been told by our sources that Olympus delayed the release of that lens til end of the year to anticipate the release of the just announced [shoplink 23577]Olympus 45mm f/1.8[/shoplink] lens. I think that was a good move made by Oly because we already have a [shoplink 14794]45mm macro lens[/shoplink] from Panasonic. We have been told the 50mm macro will be on a very high level. Don’t know what you think, but Olympus is making a damn good job with lenses now! And I know there will be more lenses coming soon!

In the meanwhile check if the new lenses are available for preorder:
Panasonic-Leica 25mm f/1.4 search page at [shopcountry 23110].
Olympus 12mm f/2.0 search page at [shopcountry 23576].
Olympus 45mm f/1.8 page at [shopcountry 23577].