I notice at https://community.igniterealtime.org/blogs/ignite/2016/08/17/openfire-403-is-rel eased that there is a link to "4.1 Release" - presumably that's got some information about 4.1, but clicking on the link gives me:
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which suggests it's there, but restricted in some way. Is there a way the "rest of us" can see this information?