...was able to stop by the Sony Style located in the Annapolis Mall yesterday to check out the 350 and 650.
Like others, I didn't have my 505 with me so it's hard to say how much the new screens make a difference. However, I did spend a good amount of time playing with the new interface and found it to be very well executed. I was initially worried about the page turning with the touchscreen but found that is was easier to use than the 505. Page turns didn't seem to be noticeably faster, but certainly fast enough.
The built-in dictionaries are a very nice addition. I must admit that I do miss having one like I did on my Cybook.
Right now I'm trying to decide whether the 5-inch 350 is the way I'd want to go. That 350 is so nice and light when compared to the 505.....155g vs. 250g.
I guess the good news is that I have to wait until the 17th before I can buy one.
-Jeff