I'm glad it has PDF support. I've been playing with it for the past few minutes. Here are my observations:
Pros:
1. You can read PDF documents.
2. You can rotate the screen.
3. When viewed in landscape it fits the page to the width of the Kindle, the height in default view.
4. You can search documents for words.
5. You can add bookmarks.
Cons:
1. You can't highlight text.
2. You can't add notes.
3. You can't look up words in the dictionary
4. Indexes do not work.
5. Some books are still too hard to read even in Landscape mode. The screen just isn't big enough.
This will tide me over until Irex finally releases the DR800SG. They said mid-December, but they didn't say what year. I'm thinking mid-December 2010.
Etienne66