Interesting..that is a kit I didn't know existed. The only current GT-R kit I have is the Tamiya one.
Well Aoshima updated their existing GT-R into three (well five if you count the two pre-painted versions coming this month) revised 2012 kits.
There was this one - which is RHD JDM. It sold out after awhile, but you can find them all over eBay. They plan to do another spot run in August
Then around Christmas it was issued as two different kits...
The 2012 GT-R Egoist - which is a really amusing "tuner" car that costs something like $180k U.S. in 1:1 and famously has a pink...err salmon color interior. This is sold out and discontinued, and I haven't heard of another run of it yet. But there are 4-5 of them on eBay.
Then lastly it was tweaked to a 2013 (not 2010 like I stated earlier) and released as a U.S./North American LHD model. I've seen exactly ONE of these ever listed on eBay and it sold the day it was listed.