Powerpivot CTP3: What is new for Time Intelligence functions

Time Intelligence functions are not new in SQL Server Denali. But in Denali we have made working with these functions a little easier and flexible. To use these one of these functions in 2008 R2 DAX you used to apply some rules: http://www.powerpivotblog.nl/powerpivot-time-intelligent-functions-golden-rules.