There are a couple of major new features and lots of small changes:

• You can now choose to sell your ads per impression rather than per day (eg you could create a Banner ad section that only showed one ad at a time)
• You can choose to have your advertisers be automatically reminded when their ads are about to finish (edit your ad sections to set the options)
• Notifications should be working now (please tell me if they aren't)

Things that we are working on now:

• A blog for announcements like these (hey, here it is!)
• Automated payments (so that advertisers can pay you directly without you having to manually invoice them)
• Discount coupons
• Allowing multiple websites per user

Also, a reminder that the first Igloo subscription invoices will be sent on 16th September (as stated on the pricing page). All subscriptions will be charged at the Basic subscription price ($7.50 for Early Adopters).