Catalog
Check component sources and individual release compatibility.
QBit catalog
The catalog describes component areas and product previews. It is not a list of components certified for QQQ 4.0. Confirm availability, exact coordinates, licensing, and compatibility from each component's repository and release evidence.
The 4.0 release includes application, data, and extension templates. These are source scaffolds, not published example artifacts. Existing production QBits have independent migration work.