Were finally starting to get an idea — Amazon has just announced a partnership with Samsung and a slew of content providers, including Warner Bros., Lionsgate, 20th Century Fox, and Discovery. Under this new partnership, Amazons Instant Video service will provide 4K content from its partner studios — and those who buy Samsungs new 4K TVs will have access to this video catalog. Its an important piece of the puzzle for Samsung — until now, mainstream 4K content has been hard to come by, but with the support of Amazon and its studio partners, the library of 4K video should start growing rapidly.