I am happy to announce that the Spread for Windows Forms version 5 Release Candidate has now been posted!
Download here:
http://www.fpoint.com/SpreadWin5RC/20ver.aspx
http://www.fpoint.com/SpreadWin5RC/35ver.aspx
I plan to monitor your feedback here and in the beta forum, so please let me know if you have any questions or problems.