Tom Warren at The Verge:
The touch experience isn’t great from my own testing on Windows 8 Release Preview, and it feels all too familiar to Windows 7 — a first stab at touch improvements on desktop software. Microsoft’s Office division has taken a similar approach, by increasing touch targets, but it seems that any truly touch-optimized versions of Office will come as Metro style apps, if anything at all. It’s clearly difficult to create a fully functional touch-based word processor or spreadsheet with legacy support, and Microsoft hasn’t cracked it yet.
To be clear, the major applications in Office 2013 are not done as Metro-style apps, even though Microsoft is preaching to developers that Metro is the future.