Object Desktop ("OD") isn't an actual separate "suite". You have access to the current versions and updates of the included programs, including pre-public betas, as they become available for one year. I would not expect an actual "Object Desktop for Windows 8", that's not how it works.
If you go to this page and then follow the detail links ("Learn More" buttons) for each of the programs it may be helpful.
It indicates it comes with WindowBlinds 8.
As with any downloaded software, make safe backups so that you can re-install if needed should you decide not to renew the annual subscription.