10.9 version?

[Hemo2]

I have Portrait Professional Studio v10. I regularly "check for updates" in the program. I currently have v10.8.2 and when I check for an update, it tells me that no updates are available and that v10.8 is the latest version. I see folks referencing v10.9 though, so of course I'm wondering how the heck anyone got this version when the program insists I already have the newest version at 10.8?

How might I get the newer updates to this program if it won't allow me to do it? Is there a direct download link to the latest version someplace? Thank you.