The LCD screen on the E-P1 is on the low end for resolution. I'm sure
this has been mentioned before. During my hand-on preview at Olympus
today in Osaka, I noticed it immediately. I was looking at the menu
screen and I remember thinking that the scroll bar on the side looked
a little pixelated. I thought it was weird, and it wasn't until I
checked the specs again just now that I realized why it looked that
way.
The E-P1 has a 3-inch screen with 230,000 pixels. Compare that to the
3-inch screen on the Canon G-10, which has twice that resolution
(461,000 pixels), or to the 3-inch screen on the 5D Mark II, which
has quadruple the resolution (920,000 pixels).
Lots of cameras have 230,000 pixel screens, but they tend to be
smaller than 3-inches. (The E-3 is 2.5 inches and 230,000 pixels.) So
the size of the pixels on the E-P1's screen are pretty large.
(Although I should point out that the Canon 40D has a 3-inch, 230,000
pixel screen, and probably no one complains about it.)
I'm not sure how Olympus could have motivated using the lower
resolution screen, except that maybe they were trying to keep costs
down or that maybe it uses less power (which could be an advantage
for an always-on live-view camera with a small battery and a big
sensor.)
It's a little disappointing, but I guess it's not really a deal-breaker.