Oops just voted wrong, sorry.
I voted 'I have an early 2013 rMBP and have no IR' but this should have been 'I have a late 2012 rMBP and have no IR'.
I did only buy my rMBP 2 weeks ago but it was a special deal and when I looked up the serial number it was made at the beginning of November last year so it's definitely way before the release of the 2013 models.
But I have no IR, and I've even looked for it.