The user-replaceable part is standard fare, but I've never heard about the forced upgrading part. That sounds pretty crazy. I guess if you follow the LGPL and a

The user-replaceable part is standard fare, but I've never heard about the forced upgrading part. That sounds pretty crazy. I guess if you follow the LGPL and allow a user to swap out the library you're covered, since they say "or". Maybe it's "LPGL or release updates until you die"?