EastEnders: 5 eps a week already confirmed?

The Independent newspaper has a report about Channel 4 director of television and content Kevin Lygo saying he's disappointed the BBC is flirting with taking EastEnders from four to five episodes a week. Lygo believes this would have a detrimental effect on commercial channels, stifling their ability to experiment. Be that as it may, I got the impression at last week's TV Forum in London that the fifth episode was a fait accompli. Comments made by soap writers and executive producers suggested a fifth helping of EastEnders was simply a matter of when, not if. Perhaps there's another question worth pondering about all of this: at what point does a good thing become too much?