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Changes and Backwards Compatibility
Telerik RadListView for ASP.NET AJAX Q2 2010
Since Q2 2010 all major changes for the controls are listed in the official Release Notes posted here
Telerik RadListView for ASP.NET AJAX Q1 2010
RadListView for ASP.NET AJAX which is part of the Q1 2010 release is fully backwards compatible with its previous version (Q3 2009).