Milestone 1 -- v0.25: "Good enough for us."

• Curved corners using -moz-border-radius in CSS and -webkit-border-radius
• Drop-down menus to match mock-up
• General styles
• Integration (messy) into Drupal

Milestone 2 -- v0.30: "Make it pretty."

• Curved corners using a more cross-browser friendly technique
• Touch up general styling concerns
• Separation of CSS into managable/simple paths
• Comment code so that it makes sense to others
• Import CSS in page.tpl.php is less hard-linked
• Package a downloadable archive

Milestone 3 -- v0.40: "Hold on to your butts."

• Integration (nicely) into Drupal so that main menu navigation doesn't need to be expanded for drop-down effect.
• Check optional dependencies on Drupal modules
• Make sure if a user puts navigation back into vertical sidebars that it looks decent. (Even though that's not this theme's intent)
• Make at least 3 color packs (green, red and blue)
• Check for backward compatibility to Drupal 4.x

Milestone 4 -- v0.50: "Hello world!"

• Finalize Drupal screenshots
• Release/announce to the Drupal forums
• Try to get listed in the Drupal themes directory
• Have a more dedicated demo site ready and waiting