There’s no updates on this I’m afraid. You are right that they do feed into Xero, but it’s not a public feed (it seems to be limited to just Xero).
The only ways we offer to import bank transactions is through our Google Chrome bank import extension, which is free to use. However, the real breakthrough we’re waiting for is an API which would certainly make life easier for everyone!
The only thing I can suggest is watch this thread for the time being, as if there is any progress, we will update it here