Here's some references:
This is one article that had an indicator that businesses were buying tablets:
http://www.computerworld.com/s/article/353592/Businesses_Plan_a_Tablet_Buying_SpreeAn article that indicates that SAP is buying them as well:
http://www.bloomberg.com/news/2011-10-10/sap-buying-up-ipads-confident-in-apple-after-jobs-s-passing.htmlOf course, you can look up the other references out there but it's happening.