Apple has updated its iBookstore app to version 1.1. It’s now an “universal app” that runs on the iPhone, iPod touch and iPad. The new version also lets you choose between a sepia or white page background, and Georgia is available as a new font.

iBookstore 1.1 requires iPhone OS 3.2 or better. It’s a free download at the Apple App Store.

The iBookstore features books from major and independent publishers. Once you’ve bought a book — or download a free one — it’s displayed on your Bookshelf. Just tap it to start reading.