[hedora]

So, then what is this announcement? They're moving to WPP, which is... IPP but it warns on crypto downgrade, and is maybe incompatible?

I thought Windows defaulted to SMB for printer discovery, and not IPP. Anyway, from the announcement, they don't seem to be improving on what I'm used to getting from CUPS.

[yrro]

Maybe the announcement means "IPP Everywhere" instead of "IPP".

That is the extensions to IPP that adds network discovery (via multicast DNS) and 'driverless' printing (by mandating that prints support standard document formats). It probably also includes a standardised way for client to find out what paper sizes, duplex, quality, etc. settings the prints has.