There is a chance that programming without commercials will be included in the upcoming ad-supported tier. When original movies first premiere on the platform, the company won't be running ads. In doing so, the company hopes to keep its service appealing to high-profile filmmakers who may find commercials boring.
Content for kids could be free of ads. According to reports, the company won't run commercials during kids programming. The company's current agreements don't allow it to run ads during licensed content It is possible that serving commercials to children would be more trouble than it is worth. Google paid $170 million for violating the Children's Online Privacy Protection Act.
The company's strategy may change between now and when the service eventually launches. The new tier could lose support for offline viewing according to the code found by Steve. It was pointed out that it was still in the early days of deciding how to launch a lower priced, ad supported option.