Cydia 1.1.21 is a bug fix release

Shared Sources Sometimes Broke

Using a URL to share a package from a third-party repository that had a typo could lead to an unremovable source.

Upgrading Cydia Broke AppleTVs :/

Users of the AppleTV 2 jailbreak who upgraded to Cydia 1.1.19 or .20 would lose access to the core Cydia sources.