Another thing to consider:
People keep asking for the EVF to be built in. This has plusses and minuses ... the plus is that you don't have to think about it, it's there for your use all the time and the camera's size is what it is, at least is consistent. The minus is that the camera isn't modular ... as EVF technology advances, you're stuck with what you have and it cannot be changed unless you buy another camera.
With the modular design, the potential exists that Olympus could come up with that hoped-for 3Mpixel EVF and it could work on even the first camera that supported an EVF option. This is a plus. Also, when you don't need or want an EVF, when an optical VF or the LCD alone is more to your liking, you don't need to carry the additional bulk. Another plus. The minuses are all implementation details ... how well does a specific EVF fit, how well does it work, will it stay in place without my having to think about it... etc.
A high-end EVF is the second (maybe the first) most expensive assembly in these cameras. It saves a lot of money to offer the camera LCD only so that only those who really want the EVF go out and buy it. Now they are offering two grades of EVF, testing the flexibility of the modular concept.
The only fear I have is that they'll discontinue the more expensive, higher quality VF-2 EVF if sales for it drop off in the face of the less expensive VF-3 to the point where the VF-2 is no longer profitable to produce. It is a very good viewfinder ... I'm almost thinking of buying one and putting it in the drawer just in case I might want to pick up a Pen body at some point.