.info reads version = "7.x-3.0-rc2+2-dev"

The latest tagged release (and master branch) do not carry the versioning information as it is handled at the time of packaged release.
http://drupalcode.org/project/omega_tools.git/blob/93fd36d152cf5646273f0...

The only code in the .info in RC3 release is:

name = Omega Tools
description = Provides additional functionality for the <a href="http://drupal.org/project/omega">Omega Theme</a>.
package = Theme Tools
core = 7.x

dependencies[] = ctools

files[] = omega_tools.module
files[] = includes/omega_tools.admin.inc
files[] = includes/omega_tools.drush.inc
files[] = includes/omega_tools.wizard.inc