They're thinking about it, according to the Catholic Herald. The English and Welsh bishops did it a few years ago.
I think they should. Avoiding meat on Fridays is pretty much the smallest sacrifice one could make for one's faith, and at the same time, it's a wonderful witness to the world. As the Archbishop of Hobart puts it: "In the past it was one of those practices that everyone knew: Catholics don’t eat meat on Fridays."