Very very early impressions-
1- Still fires after you've pressed the button (as in the screen is still let, etc. not just the carto sizzling), just not as long as the v1. Maybe .25 seconds.
2- Started testing with the 18650 in voltage mode with rms on with a 2.5ohm sc carto- 3v=2.97v, 4v=4.05v, 5v=5.07v, and 6v=5.88v
Without rms on- 3v=4.12v, 4v=4.88v, 5v=5.77v, 6v=6.73v
3- Threading is better on this version for the endcap than the previous version
4- the channels around the tube are fewer (8 this time), shorter (by about 2mm), and the edges on them weren't smoothed out properly. They are somewhat sharp.