I applied for the April intake just past, and received an email today saying they expect the online testing to take place in October.. Makes it sound like 12 months is optimistic!
I've done the same, only this is my 2nd shot. I got knocked back after the interview stage 2 years ago.
So I'll just get on with my life until the next email arrives.
Last time it was 12 months on the dot from start to finish. Expect month-long delays at certain points and short delays at others. All depends on when they've got the resources available I suppose.