Set to launch in spring, Aeon Digital, a new online on-demand service, will make more NBC Universal content, including TV events and movies, available on the web, writes Broadcasting & Cable (via MediaBuyerPlanner). Users can access programming for 24 hours after ordering. Aeon's service uses a digital set-top box to access, play and save the content sent over the internet. Apple's online iTunes service will also offer NBC U content from 300 episodes of 16 new and old series, starting in December.