the new MyDAC version 8.4.10 is available for download now.
In this version:
- RAD Studio XE7 is supported
 - Lazarus 1.2.4 is supported
 - The TCustomDADataSet.GetKeyFieldNames method is added
 - The TCustomDAConnection.GetKeyFieldNames method is added
 - The ConstraintColumns metadata kind for the TMyMetaData component is added
 - Demo projects for FastReport 5 are added
 - Several bugs in the SmartFetch mode are fixed
 - Bug with quoting names in the EmptyTable method is fixed
 - Bug with calling the Refresh method after executing the EmptyTable method is fixed
 - Bug with setting calculated field values using the AsExtened property is fixed
 - Bug with re-calling the AfterExecute event is fixed
 - Bug with re-calling the BeforeExecute event is fixed
 
http://www.devart.com/mydac