If you have granted the posting authority to the @steempeak.app account you can now schedule post publishing also when you logged in the Steem Keychain.
This is by far my favourite update of this update! I used scheduled posts often but hated using STEEMConnect for everything else. So happy about this!
Not sure I like guest login, if they were able to login and then immediately create a STEEM account from their social login data that would be cool, but otherwise I don't understand how it is more enticing for them to create an account and participate in curation if they can just do a lot of lurking around in a guest account. Don't mean to be cynical about it, just voicing..