Dataplex supports Windows 7 only. There are no plans to support Windows 8.
If you choose to install or upgrade to Windows 8, you must uninstall Dataplex first.
If you wish to install Dataplex on Windows 8 in Windows 7 compatibility mode, you do so at your own risk.
Please remember that Dataplex does not support dual-boot. Be mindful of the Dataplex system requirements.