Indeed, tomax, you are right !
Not so much activity on the developper side, and no more information about the release notes to be able to follow the versions...
I jus started a download, just to see if it is the same version as mine !
What a loss of time :(
btw : Mine (the latest download as of today) is : 6.50.110325
Nikon D300s - Nikor 10.5 - (PW7 Pro + TW6 Pro) - W7 Ultim - DELL Prceision M6400 (Quad Core - 8GB - 2x160GB-SSD)