Hi @ricciV1,
The knime-extension package version matches the version of the “Python Extension Development” feature. It provides the API of that release for editor auto-completion. 5.6 was the first release of our new shortened release cycle, as described in KNIME Analytics Platform Now Releases Every 6 Weeks .
Currently, all our conda packages follow the “KNIME Analytics Platform” release versions (or lag behind if nothing changed). So you should use the package versions that matches your Analytics Platform version (latest patch if available).
Since we’ve switched to a shorter release cycle, we’re also looking into adjusting the versioning scheme to avoid unnecessary bumps. Updates on this will follow soon.