Just got an email about it! - Really not that big a deal since FC and Medaillions always were able to board as the first (and with most taking advantage of zone 1+2 boarding best I can tell). The only time it would come in handy is when you arrive after a close connection and there is a big line, but even then it not a big deal as the line usually moves briskly.
Now, personally I would have preferred a new DL rule of holding back coach until BE has disembarked on TA flights as getting early to the immigration gates can be important with 200 TAF's arriving at the same time in ATL/CVG/ORD/SEA (at least it appears so!). I am reminded of the advantage of this when flying SK and OS who do this routinely.
Premptive statement for the equalitarians amongst us: No, I don't expect the FA's to kiss my feet as I leave, no, I have no disrespect for people in coach, I just think that when you pay x10 the amount for a ticket, it should come with a fair amount of privelleges over those not paying that amount. If I ever was on the other side (pre-1989 - last time I flew coach TA

) I would have no problem with this.