The updated iWork for iCloud beta apps are now live on icloud.com. While the Pages, Numbers, and Keynote betas have been available for a few months, the ability to collaborate in realtime was announced during today’s keynote. The apps are now live and available to use on the site with any Mac or PC.
New iWork desktop apps for Mac will be released soon. They will be free with the purchase of a new Mac, but upgrade pricing was not announced.