I think we all need to get this out of our head - just because it is limited with a low print run it will become a grail. Well that's where most people are wrong.
So what do we define as a 'grail'? That can be a subjective definition.
To me a grail is a steelbook that is highly sought and very expensive. I didn't say 'rare' because that can be subjective definition.
Iron Man FS, I believe with an 8k print run, is a grail but it is not that rare as opposed to T2 2.0. Most collectors have an IM FS but won't let go of it which places emphasis on demand and higher price.
T2 2.0, believed to have a 3k print run, is 'rare' because it is hard to find and not many people actually own this. I think from this forum there are about 15 people I know that owns a T2 2.0 - and that isn't a lot at all. With IM FS it's going to be very high.
T2 2.0 is one of the original grails that has exclusive artwork worldwide. That means no other country has copied this.
T2 Korea artwork is pretty much the same as the UK and European releases but with the title on the front changed. The only addition is the slip cover and art cards to add some 'exclusiveness' to it.
There are already a lot of releases for this title already including the European and the T2 Version 1.0 to choose from.
For a steel to become a grail now will have to take something very special and it will take time. I don't see this becoming a grail for the four reasons:
1 - It's not rare
2 - Same artwork
3 - A lot of colletors are still chasing 2.0 or are happy with version 1.0
4 - Everyone on HDN has pre-ordered one lol
Even Blufans that are limited to 1000 are not grails yet but taking nothing away from them at all, they have gained in value.
I believe I owned one of the rarest terminator steels in the world. The Taiwan version

Limited to 50 and the only difference was the price sticker lol and worth peanuts.
Terminator Korea - limited to 200. No offence to anyone but I heard all the hype and bragging about it and after some initial high sales, collectors claiming it become the next grail, now you will find it difficult to sell for $200.
I am not taking anything away from T2 Korea, it is a nice release and thought put into a slip cover, but all this talk about loads of copies being available tells me one thing? Everyone wants it OOP hoping it become the next grail and cheesed off it isn't OOP.
I'm gonna be blunt here, I don't think there be any future grail in a long time.
So let's stop all this silly hype and people unhappy that it is becoming available again with lots in stock and actually enjoy this release.