Amazon has introduced a 2.5 software update for its Kindle, which features support for Facebook and Twitter.

The new Facebook and Twitter support will allow Kindle users to share book passages with their friends on the social networks.

Amazon said it is rolling out the new software update to a limited group of Kindle users and plans a full release in late May.

Other new improvements with the update include the ability to organize books and documents into one or more collections, zoom into PDFs and pan around to view small print and detailed tables or graphics.

Other enhancements include:

Password Protection- password protect the Kindle while it’s not in use

More Fonts & better clarity- two new larger font sizes and sharper fonts for a better reading experience

Popular Highlights- See what the Kindle community thinks are the most interesting passages in the books you are reading