The new homepage, which still has a distinctive Twitter feel about it, has quite a different look and a bunch of new features. While tweets are still shown on the left of the page, there's an expanded sidebar on the right with new features like maps of geo-location tagged tweets and embedded pictures and videos.
"It's about a faster, easier, richer experience a better way to discover what's in your world," Williams said during the press conference. "We want people to get more out of it in less time."
The launch of the redesigned site began rolling out in the US Tuesday evening EST. It will be an incremental rollout in the US, and then around the world.
"This redesign could make [the site] more robust and able to survive competitive challenges," said Rob Enderle, an analyst with the Enderle Group. "But Twitter was known for its simplicity and messing with that has its risks."
Before Twitter's press conference was even finished, the Internet was abuzz with people wondering how this move would affect third-party Twitter platforms like the popular TweetDeck and HootSuite. If Twitter.com is suddenly more compelling and fun to use, will users still go to a third-party for their tweeting needs?
Maybe not, said Enderle. "This will allow users to do more in Twitter," he noted. "And if this works, it will make third-party sites less popular, but only if this works."
And what about Facebook, another extremely popular social networking site that is competing with Twitter for users' time and attention? With embedded pictures and video, suddenly Twitter is moving into Facebook's traditional territory.
"I think the realization is that [Twitter] could be a one-stop service for people who want a complete experience," said Enderle. "Twitter is clearly targeting Facebook... but people are creatures of habit and it's very difficult to move them from a service they like. Facebook is likely stickier than Twitter."