Possible Clues:

• Bill and Max detached from income tax
• 'Thawed, see? (6)'
• Nothing frozen for 17 across
• See to it that it isn't frozen
• Announcement or warning
• Information of future events
• Announcement with information about a future event
• Someone else the establishment - cavalier lot - won't take 21down 13
• You'll be 11 across that it isn't frozen
• Observe books in pleasant surroundings