Great news for XPages today: Notes/Domino 8.5.3 Upgrade Pack 1 has just been released.
In short, Upgrade Pack 1 is an IBM supported version of the XPages Extension Library. This should help remove the fear of the Extension Library being open source that some customers have had, and thereby improve the adoption of XPages out there.
Upgrade Pack 1 is available on Passport Advantage as part number CI5HUEN.
Pingback: XPages Extension Library on OpenNTF updated to match Upgrade Pack 1 | Per Henrik Lausten