Jdhodges made a camera size comparison which you can see on his website:

http://www.jdhodges.com/

Dear readers,

I had a lot to work for my REAL job and I have been busy from early in the morning to late night from Monday to Sunday.

Starting from tomorrow I will have more time for you and I will make a first rumors summary with all the specs we got. We still miss a leaked picture from the back of the camera. We asked our sources to deliver us one a soon as it gets. Sorry if I havn’t answered all your questions you wrote as comments or sending me emails. Tomorrow I will answer you all!
Send all what you know over the E-P1 to 43rumors@gmail.com

Special thanks to all the people who send me links to articles and links!

And if you think we are doing a good job may you are interested to support our website!

Have a nice day,

Alejandro

click on picture to enlarge

So what do you thnk? The E-P1 comparea very well with the DP2 and is just a little thicker than the LX3. From the size point of view I am really satisfied with the E-P1!

Maybe I am a little biased, but to me the top dial is the classiest of the group here.

Source: http://www.flickr.com/photos/k-blad/

Olympus E-620 gets reviewed by cameralabs.com.
And the Sigma DP2 gets tested by the unpronouncable akihabaranews website :)
Update: gizmodo.com has a DP2 review to!

Photorumors posted a front view of the camera.

http://forum.xitek.com/showthread.php?threadid=628866&pagenumber=7

1) Olympus have new flash
FL-14 GN-?? (presume small, GN-14),

UPDATE: E-P1 can control FL-xxR by some way

2) New converter 43->M43

3) Olympus E-P1 have two colors Lens
(2 kits ,17mm )

UPDATE: (silver,black)

43rumors@gmail.com