Microsoft will offer touch-optimized Office apps for Windows, but there's a big catch; the company will launch those versions alongside the release of Windows 10, which won't happen until sometime in 2015. Microsoft didn't offer any other information on those touch-based Windows Office apps, but it did show a screenshot of a preview version of PowerPoint for Windows 10.
The touch-optimized Office software for Windows will be released well after the versions made for Apple's iPhone and iPad. Microsoft also announced today that Android tablet owners can sign up for a preview of Office made for their devices, with a public launch expected in early 2015.
Update Microsoft has now posted the correct screenshot of PowerPoint for Windows 10 on their blog; a previous version of the article had an incorrect screenshot posted