For those of you on the fence about buying now or waiting, you can simply wait forever for the next best device, or get one now and enjoy.
I see the plethora of ebook readers available now and those rumored/stated to be coming out...I still love my Sony 505. I bought it 6 weeks ago to replace my 700 which I still have but do not like so much.
The 505 is rock solid. Form Factor and usability is 100%. Easy to take with everyday. I am never without my reader.
So, will I ever buy a new one? Absolutely. But buying the 505 now is STILL a great idea.