ISO27001 recertification to 2005 or 2013

Hi Dejan, We are certified to ISO27001:2005 and our certificate expires during December 2014. From the information we received it looked like we would need to certify to the 2013 version during the recertification audit because you can't be certified to 2005 after October 2013. However I have recently been told that actually we can be certified to 2005 during our recertification audit in December 2014 because there is a two year transition period once a new version of the standard is released. We can then be certified to 2013 during surveilence audits in 2015. Can you tell me which is correct? Thanks, Mark