### Beta

- Promote WatchBookmark feature to beta and enable it by default.
  With WatchBookmark feature, clients are able to request watch events with BOOKMARK type. Clients should not assume bookmarks are returned at any specific interval, nor may they assume the server will send any BOOKMARK event during a session. ([#79786](https://github.com/kubernetes/kubernetes/pull/79786), [@wojtek-t](https://github.com/wojtek-t))

    h.update(name)
    for r in revs:
      h.update(b' ')
      h.update(r)
    h.update(b'\n')
  if (b'bookmarks' in peer.listkeys(b'namespaces')):
    for name, rev in peer.listkeys(b'bookmarks').items():
      h.update(name)
      h.update(b'=')
      h.update(rev)
      h.update(b'\n')
  print('r1:'+base64.standard_b64encode(h.digest()).decode('utf-8'))

@command(b'golookup', [], _('url rev'), norepo=True)

- Client-go/reflector: warns when the bookmark event for initial events hasn't been received ([#124614](https://github.com/kubernetes/kubernetes/pull/124614), [@p0lyn0mial](https://github.com/p0lyn0mial)) [SIG API Machinery]