According to The Wall Street Journal numerous Hollywood production companies and online video creators have already pledged to support the new channels, which will reportedly generate roughly 25 hours of "original" programming for YouTube each day.
According to the journal's report, the majority of the 100 new channels will launch in 2012, while a select few will go live in November. The channels will reportedly cover everything from sports to popular culture and comedy.
Though unconfirmed, The Wall Street Journal went on to allege YouTube is set to invest $100 million (£620,000) in the new venture, hoping the increased traffic will help it attract advertisers.
"Our goal with this channels expansion, along with the grants and educational programs we've launched in the past year, is to bring an even broader range of entertainment to YouTube, giving you more reasons to keep coming back again and again," YouTube reportedly said in its statement to The Wall Street Journal. "And for advertisers, these channels will represent a new way to engage and reach their global consumers."
A look at the currently confirmed channels can be found on YouTube's channel page. The page currently lists several big name contributors including The Onion, and The Comedy Shaq Network.