The playbook explicitly advises against "in-place upgrades." Instead, it recommends:
Any responsible discussion of the Ghost Spectre Playbook must include the downsides. This is not official Microsoft software. The risks include: ghost spectre playbook
As of 2026, Microsoft has hinted at a more modular "Windows 12" that may allow component removal officially. If that happens, the Ghost Spectre Playbook may become obsolete. However, given Microsoft's reliance on advertising and data collection, the demand for custom OS versions is unlikely to disappear. The playbook explicitly advises against "in-place upgrades
The playbook continues to evolve. Recent additions include: ghost spectre playbook