Pre-release binaries, how do I know if they are installed?

Ive followed the directions here http://help.directadmin.com/item.php?id=408 to update to a prerelease binary. However in my control panel it still lists my DA version as 1.41.1

Is there anyway to know if the binaries are installed and working or is that version supposed to change in the control panel as the indicator of the change?

Thanks!