I think I heard they were at a few US vendors, I have no idea about the EU. I'm sorry...
Well, thanks. Not that bad, I always have a couple of coins around.
Anyway I updated and tried the X2 with the new firmware: it's now possible to run it in Joule mode (in power mode as well). The thing is temperature settings don't make any difference at all and in fact the temperature displayed when activating the mod is 0 °C, you can just regulate the power as before (I mean joules, ok, but it's watts).
Besides not having TC the atomizer feels very different from before, it's not that harsh and all in all I would say it vapes particularly smooth compared to power mode.
So maybe a tank not worth buying, but if you have an sx and an X2 I would recommend to try it out with the new firmware, there is indeed a difference.
EDIT: ok, bull...., I didn't lock the resistance value. It does display a temperature, I'll make some tests.