I believe there are some thoughts which are not correct.
One has to sperate two things:
When will a country switch over to EasA licensing
&
From what date should a resident of an EASA country also hold an equivalent EASA license for the priveleges he wishes to use.
The adoption date differs but the latest possible opt out date is april 2013. All Member countries have to adopt EaSA licensing by april 2013.
Lapl may be introduced at a later date.
For all of the member countries the date at which you need an EASA license as well is set firmly at 8 april 2014.
Now I believe you can also apply for a validation .. But you can only do this once. This would mean that you can extend till april 2015. However .. I am not entirely sure if this is correct.