There was a quiet article that access was gained to the phone last week.
I guess there isn’t much more to be said until either the legal announcements, or if someone else with copies decides to publish them for political gain.

Now that access to the phone has been gained I suspect the contents will be reviewed by several lawyers in depth, probably with Boris right there. Given that there will be months if not several years of messages to review, I’d not expect an update for a few weeks, unless a decision is made to trickle stuff through to the committee as it gets cleared.