Unfortunately I have little information about the A01, but Frag Maniac might have.
As I stated above, I can only guess based on what I've read that Dell is perhaps intending to wait until all or most of the current 2709W models are sold, perhaps via promotional deals, then release revision A01. Since Dell has fairly lenient warranty policies on their displays I doubt they want to get caught up in a lottery situation and wind up with lots of returns based on word of mouth comparisons
I live in the Netherlands and i am wondering where i can buy the Doublesight DS-263N.
Well even if you find a place that carries that brand near you, many vendors are out of stock on them due to high demand. It's also a 26" display (25.5" actual), so it goes for about $700 even in the US. I was mainly pointing out examples of low lag displays at a good price, for it's size anyway.
Doublesight doesn't list any distributors outside the US on their US site, even though they are a Korean manugfacturer. You could check into the Hazro brand in the UK, which have S-IPS panel displays (the DS-263N is S-IPS) including a 24" one. They also have aluminum bezels.