The transition toward Full Site Editing (FSE) has occasionally divided the developer community. While some welcomed the absolute control of block-based themes, others preferred the structural predictability of classic PHP templates. WordPress 6.9 maintained a strict separation: a theme was either classic or block-based, with limited middle ground. If an administrator using a classic theme wanted to edit a header layout, they had to rely on theme customizers or write custom PHP template files.
WordPress 7.0 elegantly bridges this gap by introducing Hybrid Themes. This architecture allows traditional PHP-based themes to selectively integrate block-based layout elements. In version 7.0, developers can mark specific sections of a classic theme—such as headers, footers, or sidebars—as fully editable block template parts, while keeping the rest of the layout powered by reliable, established PHP files.
This hybrid approach allows business sites to adopt modern editor capabilities incrementally, without forcing a complete, expensive site redesign. It offers the stability and custom code execution of classic themes combined with the visual layout editing of the block editor.
Furthermore, 7.0 introduces the Block Template Part block directly inside the standard post editor for hybrid themes. Editors can adjust site-wide global templates on the fly while working inside a simple post. While WordPress 6.9 pushed a binary choice that forced complex transitions, version 7.0 respects legacy systems and offers a smooth, practical pathway toward modern site building.