Olympus Pen E-P1 will have two Olympus lenses available to start with.
The M.ZUIKO DIGITAL 17mm f2.8
[34mm (35mm camera equivalent)]

Why cant’t we get this one in black to!?

And the M.ZUIKO DIGITAL ED 14-42mm f3.5-5.6
[28-84mm (35mm camera equivalent)]
There will also be a optional optical viewfinder for the 17mm (Cool)

A Four Thirds adapter and a Olympus OM adapter will also be available :0)