Amazon has announced a 2.5 Software update for Kindle and Kindle DX users. All the readers can now organize their documents and books as they want to i.e. they can be made as collections. Amazon also has increased the security by providing the password protection for the documents. Users can now zoom within the PDFs to read in a better way. Above all they have integrated Facebook and Twitter sharing which is the real need of many.

Fonts inside the documents are also improved and made sharp. However this change is not implemented for all Kindle users and it is available only for a limited group. All the kindle readers can avail this feature at the end of May.