The 1.1 deck has o- rings above and under the juice- holes, so the jfc can be fully closed.
In those pics the new o-rings are clear so you need to look closely to see them.
And he bottom part is somehow slightly different too.
But I have no issues using the old upside-down trick with the v1, and this one has no 1mm pluspole so no need to get it.

Tank and chimneys look exactly the same as v1 so very strange if nano tank won’t fit.

Mille is excellent RTA so if you don’t have it I highly recommend getting one, Ulton is not available but Coppervape might be good too.