As I read it a JC is not convened at first, but the final paragraph states that if the minor is unrepentant then he must be “removed from the congregation”. Whether that implies a JC at that later stage or not, the outcome is the same.
Arguably no one was already 100% shunned because elders spoke to disfellowshipped people and family were allowed necessary contact. So 100% shunning was never a thing anyway, and the current shift in the policy appears marginal. Maybe it will be further loosened, but as explained in the recent broadcast and letter it only amounts to greetings at the meetings.