It's only a couple of very minor changes, here they are from Pete C's post on UKV:
Now also seems a good time to explain what those changes will be. There has been a slight redesign to the way the negative posts will be fit into the deck. It will now be press fit and have a screw underneath in the same way the positive post does to eradicate the possibility of any spinning. There is also a slight redesign to the chamber pieces following feedback from the first run of devices which should reduce the chance of leakage to those that use the large vertical slot over the two horizontal slots. As stated in a previous post there are also some slight changes to the engraving
I managed to get one too thought I'd missed it as they didnt go live till 8.01pm, but was bought and confirmation received before 8.02pm
Didnt bother with the mini kit yet, want to see how the standard is first and if I'll actually use it. Let the postie stalking begin ha ha
I have not been following the 200 page thread over at the other forum.
Would you know whether the 2 chamber sections of the UTA2 are compatible with the UTA1 ?
The only niggle I had with the UTA1 was that I had to use masses of cotton and a big arse coil
because the chamber slots where so large.