Yesterday I popped into my local GW to take a look at the new paints. Here are a few thoughts based on the trial pots they had and the chat with the chaps working there.
The pots - will all have the prop-open system like the washes (no more tooth picks). New sealing system will apparently stop too much leakage and drying (we'll see...)
Base - these seem as good as the foundation range. The white in particular was quite impressive in covering a black undercoated space marine. Will be useful for quick jobs and beginners, hard to judge mid-to-higher expertise level uses at present.
Layer - seem to be ok, but only time will tell with these. Some nice looking new colours.
Shade - as good as current washes and the new colours look reasonable.
Glaze - interesting consistency on these, very thin but the pigment is tight so they could be a revelation to people not already using transparent mediums.
Dry - cottage cheese for painters.
Texture - grainy paint: nothing amazing, but there might be some interesting uses in creating rough skin on large monsters. Weathering mediums and powders might do this better though.
Technical - none of these were in the trial pots.
Supply - apparently each UK store will be getting 12 of each colour in the initial batch so pre-ordering is advised.
Hope that's useful folks!