BJP did an interview with Akira Watanabe and Miquel Angel Garcia from Olympus - they have big plans for the future of 4/3 format:
"Of course, Olympus is looking to attract pro shooters, Garcia says, and one way to do that is with a viewfinder and integrated flash, which the E-P1 lacks. 'Our main focus with this first model has been to make a compact camera to attract the users from the compact market,' he says. However, professional photographers wishing for a viewfinder will see their wishes granted, according to Watanabe. 'We are now preparing for future products to incorporate a electronic viewfinder,' as well as a flash, he says."