Yesterday Apple released version 7.6.1 of iTunes which fixes several unnamed bugs and improves compatibility with the AppleTV 2.0 software.
Apple also announced that they will begin offering a discount on select movie titles for rental. There will be one movie per week that will only cost $0.99 to rent, starting with the movie The Hours. The special pricing takes effect on Thursday and lasts until Monday.
Apple also regularly offers free music and occasionally offers free and discounted TV show episodes, the addition of discounted on movie rentals is most likely being done to promote the service, I know it will get me renting more movies (especially the discounted ones).