Finally, there's Internet Explorer 10. It's a real step backward in terms of compatibility in both its "Windows 7" and Metro versions, which is incompatible with a variety of AJAX tools, including recent versions of the highly popular TinyMCE. Worse, the Metro version is highly unintuitive to use, with seemingly random navigation methods. (Hint: Try to swipe only up or down from the screen edges.) So far, the critical consensus is that you'll be better off with Google Chrome on Metro than with IE10.
Office on Windows 8 tablets: Not bad like Windows 8 itselfAlthough Microsoft wants people to use Office 365 so that it can collect monthly subscription fees ad infinitum and not worry that users prefer to skip new versions, Office 365 requires a live Internet connection and can consume lots of data if you don't have a Wi-Fi connection.
I could not test Office 365, given a snafu in the password setup Microsoft provided on its loaner device. Plus, when I tried to install the Office 365 preview on another Windows 8 PC, it would not install. I will follow up in my Mobile Edge blog about how well it works in a mobile Windows 8 context once that's been straightened out. (Macworld reports that, like the current Office 365, the Office 2013 version of Office Web Apps won't work on other mobile OSes, although Microsoft plans to make its limited Office Mobile product available for iOS and Android sometime in 2013.)
I also could not test Outlook, which for some reason would not connect to my company's Exchange 2007 server, even with Microsoft's attempts to help -- something the standard mail clients on Android, iOS, OS X, Windows XP, Windows Vista, and Windows 7 have no problem doing. Worse, as noted above, turning on BitLocker encryption seemed to corrupt Outlook, making it impossible to test with my other mail accounts.
In any event, tablet users should be thinking local so that they can work on their Office documents whether they have Wi-Fi access at the moment or not.
Assuming you upped the text and other display settings in both the Metro and Windows 7 portions of Windows 8, Office 2013 at first is quite usable on a touch tablet. Office 2013 sports a different user interface than either Metro or Windows 7, presumably because it is designed to work on both. The UI is reminiscent of Office 2010, but not as cluttered.