Apple has released a minor update to iTunes via Software Update, version 7.6.1 improves compatibility and contains several bug fixes.
The following description is provided from Apple about the update:
iTunes 7.6.1 includes several bug fixes and improves compatibility with Apple TV software version 2.0.
Apple also informed iTunes customers today that they will be offering a rental for $0.99 every Thursday. The price of $0.99 will be available Thursday through Monday. Once rented the selected movie will have the same 30-day limitation as any other rented movie.
This weeks $0.99 rental is The Hours(iTunes Link).