YouTube increased the video length limit from 10 to 15 minutes "we're pleased to announce that we've increased the upload limit to 15 minutes," informs YouTube. "Tag your video with "yt15minutes," upload it by August 4, and we'll select a handful of people to truly gain their 15 minutes of fame by featuring them on YouTube homepage in a future spotlight," YouTube added.
In 2006, YouTube added a 10 minutes limitation to non-partners, because lot of users uploaded full-length movies and TV shows. Now that YouTube "spent significant resources on creating and improving state-of-the-art Content ID system and many other powerful tools for copyright owners. Now, all major U.S. movie studios, music labels and over 1,000 other global partners use Content ID to manage their content on YouTube, we're able to increase upload limit," explains YouTube.