Yes, news reports said it was to be broadcast live in Australia, although also repeated for the people who didn't set their alarms to watch it in the middle of the night. Here's the link: http://www.doctorwhonews.net/2013/08/doctor-who-live-guest-details.html

Also, all weekend long BBC America advertised that it was going to be a live announcement, with a big "Live from the UK!" graphic. This is a regional American cultural thing, but BBC America needs to learn it: you do not advertise something as a live broadcast across the country if it is not going to be a live broadcast across the country.