The new version of office appears a lot friendlier for content creation on a tablet. SkyDrive also becomes a more prominent feature that allows content creation and consumption across multiple computers (office and home).
No Business Intelligence features have been highlighted during the presentation. I have been trying to install the Preview edition on my Windows 8 tablet (only Windows 7 and 8 devices are supported to run the Preview) but apparently you cannot have both Office 2010 and the Office 15 Preview installed on the same machine, and as I just found out, removing office 2010 from the tablet is not an easy experience. Stay tuned as I am re-imaging my tablet….