They have been demoing the notes program, and the SDK does include drawing with the pointer in the notes function, so I expect at least that is in there. The notes the SDK uses are stored as HTML with BMP files for both the drawn graphics and selected portions from books (where the HTML has links back to the book). Here's a
video showing notes on the 903. This is not, however, scribbling in or on books, and margin note taking has been mentioned as on the wishlist, I think.
Edit: As for keyboard and text entry, that was a selling point of the 302, and there's no good excuse for its absence. It was promised months ago. Apparently PB have made themselves busy with the newer models.