This NIP is not yet in main. Here is an overview of PRs referencing this NIP.
format(all): JSON formatting MERGED @kehiy
NIP-89: fix `REQ` examples MERGED @AsaiToshiya
Add feature support signaling OPEN @staab
Update 89.md and 90.md with Customer Feedback Data OPEN @dtdannen
Make client hints backwards compatible MERGED @staab
Remove "NIP-33" mentions MERGED @AsaiToshiya
Add client tag to nip 89 MERGED @staab
Remove all NIP authors MERGED @fiatjaf
Reword set_metadata to metadata MERGED @AsaiToshiya
NIP-89: Recommended Application Handlers MERGED @pablof7z
NIP-89 Ephemeral Bitcoin Transaction Package Relay OPEN @benthecarman
NIP-89: payto: Payment Targets OPEN @ATXMJ