HP has packaged QTP 11, all its add-ins and HP Service Test under the heading of HP Functional Testing 11. You can download the entire package here (iso file, 3.61 GB). QTP 11 is available as a 30 days trial unlike its predecessors which were only available for 14 days. (New users need to register on HP’s site. No contract/maintenance required to download trial )
Unfortunately, this means, QTP 10.0 will no longer be available from HP’s download center.
Check the complete list of new features in QTP 11.