Qubes 4.3 Kloak partial upgrade

so I heard that Qubes 4.3 might integrate Kloak to stop keystroke deanonymization. I also think it’s safe to say that Qubes 4.3 might not be ready for a full upgrade just yet, otherwise it would have come out by now. So, my question is: how do I install just the ‘Kloak keystroke deanonymization’ part from Qubes 4.3?