I agree with a lot of the new features so I woun't double post... okay I'll just add them in the end.
I would REALLY like to see the a new menu option "Top 10" to the root menu option either replacing or adding on the "Continue Reading..." (I've yet to use this feature on the root menu). I typically read 3-5 books concurrently and find it difficult and time consuming to have to navigate each time I want to toggle between books.
DITTO Feature (Just for voting Importance in descending order )
- SONY to compete with Amazon in price/offering ( i know not an 505 feature)
- TOP 10
- Input Device for annotations (I prefer styles but keyboard would work. I do not want something that must be attached I would end up losing it or forgetting it.)
- Dictionary
- PDF secure support (I know this is in the works, but it's not here yet

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