Bishop Welby’s elevation to Canterbury was announced by Downing Street on Twitter:

Downing Street is pleased to announce the appointment of Justin Welby as the 105th Archbishop of Canterbury bit.ly/RJ340c #newABC

—
UK Prime Minister (@Number10gov) November 09, 2012

In his press conference, the ABC-designate said, “I intend -if I am not stopped – to go on tweeting.” (Currently he tweets here, but that will change.)

If these are early signs that the incoming Archbishop understands the communications world in which we now live, that is a good sign.