This release was made on 17 October 2010, before Inform was open-sourced. At that time bugs were tracked by a Mantis server, with seven-digit issue numbers, and versions of Inform were identified by build codes in the form NLNN. Suggestion numbers, also large but not starting with a 0, referred to tickets at a Uservoice forum then in use.
This is part of the historical archive of release notes.
This is a private test build released a few days in advance of v8.4, and the change log is given in full there.