sys.dm_exec_query_stats
SQL 2008: Added two new fields the the DMV (query_hash and query_plan_hash); designed to help performance tune queries with similar logic, you can read more about it at this link.
sys.dm_exec_sql_text
SQL 2008: The handle can now be also be from the sys.dm_exec_connections DMV; before it was from sys.dm_exec_query_stats, sys.dm_exec_requests, sys.dm_exec_cursors, sys.dm_exec_xml_handles, sys.dm_exec_query_memory_grants DMV only.
SQL Canada (SQLCAN) 