I'm betting that once the rush of new reader installs is over, it will be a regular kind of update to people opening their desktop apps.
per info from ltr, I am editing and correcting this post.
I don't think your link is correct. This is where I am confused.
If I go to the Kobo web site and select "Free Apps", and then "Desktop" (same as your link, Taming), it downloads Version V1.9.
But if I go to the Kobo web site and select "Free Apps", and then "eReaders", and then "Desktop", it takes me to the Touch Desktop. I'm asking if that one (which is V2.0.0) works with the WiFi version.