I'd say they'll announce recruitment towards the end of the year, around the time of the budget when they need a goods news story.
The actual campaign then will begin in Jan/Feb of 2014, whittling down the candidates and getting security clearance will take a few months. It'll be the last quarter of 2014 before the first small intake gets through the gates of Templemore, on the streets with full powers then after 30 weeks. 2016 before they actually graduate.
Actually, wouldn't it look great for the Government to have a graduation coincide with 100 year commemoration of the 1916 rising in 2016....