Millet Software has just released a new version of their DataLink Viewer using the runtime engine for Crystal Reports 2011. As far as I know this is the first third-party viewer to incorporate the newest runtime engine. With this version of DLV you can export to 2 new file formats supported by CR 2011:

XLSX – which allows you to export more than the 65,000 rows available in a classic XLS file.

RPTR- which allows you to deploy a report that users can run, without giving them the ability to open or edit the RPT in Crystal reports.

You can request a free trial of DataLink Viewer by sending an Email message to: dlv@kenhamady.com