Loren,
There is a current thread within which the question of DEC recruitment is being beaten to death.
The short answer is: nobody knows.
EK will employ DECs if they need to. At the moment, it would appear that they do not "need" to, as most of the upgrades are being done on the 777, and the deliveries of new ones is going to taper off next year, so the current program (with a bit of a push) should be adequate. The 330/340 fleet are upgrading at a slower rate than the Boeing, so I doubt there will be DEC recruitment for those fleets.
Of course, the above is purely my opinion, and could be totally wrong.