MGS 3 Subsistence had a limited edition that was only released in the US (which is complete bullcrap I say, since here in Canada we never got that version. Damn America hogging them all) that was in the year 2006
MGS 4 got a limited edition in 2008 which I got
MGS Peace Walker for the PSP got a limited edition in 2010 which I got.
MGS HD collection for PS3/360 got a limited edition in 2011 which I got
MG Rising got a special edition as well in 2012 which again Canada never got which is completely not fair I might add.
So it's not the first time Metal Gear has done this. Nothing new. I just hope Canada gets the collectors edition because if it doesn't once again I will be super pissed off.