Hi Sanjit,
I am afraid, we dont have an exact release date yet, but rest assured, we are in the last phase of testing for final v4.1 release and will be releasing it shortly provided no major issues are detected. Till then, we recommend you to check out our latest release - v4.1 Beta3 (v4.1.0.10) from this link below :
http://www.syncfusion.com/Support/Forums/message.aspx?MessageID=39029
We appreciate your patience and thanks for your continued interest in Syncfusion products.
Regards,
Guru Patwal
Syncfusion, Inc.