To my knowledge - neither of the current 2 CPT flights have had Sleeperette seats for ages.
Now that the 3rd flight is using a 2 class configuration - is this now a possibility again ?
http://www.rewardflying.com/airlines.../2/13/emirates states that all Boeing 777-300ER feature the 'angled lie flat seating' ... possibly Emirates just haven't got round to updating their aircraft maps on their website ?