If you blinked yesterday, you might have missed some of the updates from the Cupertino Mothership.

Per The Unofficial Apple Weblog, Apple, released version 2.1 of its iBooks application. The new version functions as a redesign to support the new iPad Retina Display and adds a feature that lets page numbers correspond to the printed editions. This only works on some titles, but obviously the feature will be spreading to more and publications.

Users can now search for a page number and jump to it with a single tap and you can use your finger as a highlighter when swiping over text.

The update requires iOS 4.2 or later to install and run.

The company also released version 1.4 of its Find My iPhone utility. The changes are mainly to support the iPad Retina Display, and there are the usual bug fixes and stability enhancements. Find my iPhone has rescued many a lost iPhone and iPad, so if you’re not signed up, it’s free to do so.

The update requires iOS 3.1.3 or later to install and run.

If you’ve tried the new versions and have any feedback to offer, please let us know in the comments.