When a new package is uploaded to PureOS for the first time, it enters the "NEW queue", and awaits approval from an archive administrator. The archive admin will add an "override" for the package's section and priority to the archive database. Once this is complete the package is accepted into the package archive, source and binary packages are then available as well.
It's possible for packages to be stuck in the NEW queue for a few days and not show up in the landing suite. The landing suite is the destination for all packages upon upload to the archive. If you feel the package is being stuck in NEW for too long, notify an archive admin (currently @mak ).
Once a package is NEW processed it takes about 6h for it to enter the archive.
should that read 'If a package (source or binary) is new to a suite of the PureOS archive' since we need to new-process packages NEW in amber-phone that are in byzantium or is that a speciality of amber-phone?
That depends on how the suite is set up and where it gets its overrides from - the phone suites do not share overrides with the main amber suite, so everything goes through NEW once (but that also means the changing overrides for the phone suite is easier and there is less room for error and it impacting one of the main suites).