Canon has announced a firmware update for the 30D, version 1.0.6. No changes to the tethering behavior.

• Allows the latest lens names to be recorded in the Exif information of images taken
• Adds lenses that are compatible with the Digital Photo Professional 3.2 lens aberration correction function

The link above gives more detailed information and provides the binary image suitable for Mac or PC hosts.

Tags: Canon, 30D, Updates, EXIF