Apple unveiled revisions to its iLife and iWork software packages Tuesday at the Macworld 2009 show for developers in San Francisco.

Phil Schiller, Apple's Vice President, made the presentation at the heralded event in place of CEO Steve Jobs.

Among the iLife changes Schiller unveiled were:

- A revision to iPhoto that organizes pictures using face recognition

- A feature that organizes pictures using geotags, allowing users to find pictures by the location in which they were taken

- The creation of a lesson component for the GarageBand music editing software, with lessons available from such artists as Sting, Norah Jones and Sarah McLachlan;

- The addition of new editing tools in the iMovie component that includes new effects and themes

The iLife revisions will be available with new Macs, with upgrades to existing Macs available for $79.

For iWork, Apple's answer to the Office business software by Microsoft Corp. revisions unveiled by Schiller included a new transition feature for the Keynote presentation program, the ability to transfer presentations to an iPhone or iPod Touch, and the ability to allow use of the Pages word processing software on a full-screen basis.