Possible Clues:

• Version
• A train breaks down after five -- that's different!
• Form, version
• An ay for an aye, e.g.?
• Webster's second?
• Queen Victoria welcoming a single worker of a different sort
• Mostly naive art morphs into another form
• 'Iglu' for 'igloo,' e.g
• Virginia found getting on special train a strain
• Diverse