Retina and Xojo versions

I have succumbed to the inevitable and I have bought an MBP with Retina so that I can test and produce an app that matches new stuff.

I recently upgraded to Xojo 2014 and am having to downgrade to 2013 in a hurry because 2014 deprecates OSX10.6
(Which was still being sold in November… thats way too soon to be alienating potential customers…)

When I go down the Retina Kit route and retina-enable my apps, will I still be able to do that with Xojo 2013 and OSX10.6?
Or will I be forced down the 2014 and OSX10.7+ route and so need to ship two versions again?

It sometimes helps to highlight the author of the software so they get an email and notification from the forum.

@Sam Rowlands