The current version of Winclone supports the current version of the macOS and the prior version. If there is a macOS upgrade, the current version of Winclone will support that as well. This usually translates to 3 versions. So for example, Winclone 7 supports 10.14, 10.13 and 10.12. Winclone 6 supported 10.13, 10.12, and 10.11. We QA across the different Macs hardware types and the OS versions and it is a very intensive process.
Apple has introduced SIP, Secure Boot, Core Storage, APFS, Fusion drives and more than affect Boot Camp. The latest version of Winclone means it is fully tested on the current versions. We also give 50% off for upgrades (you can buy via https://profile.twocanoes.com). Be aware that we dropped Winclone Basic, so if you purchased Winclone 6 Basic, you would have to purchase Winclone 7 Standard at 50%, which is about $20.
We have also given free upgrades to people who purchased in the last 3 months prior to a major version upgrade.
Hope that helps explain our philosophy. We are trying to strike a fair balance.