I'd believe that. I had my ET installed almost 4 years ago and the design has not changed one single bit. If Pentair is following standard versioning numbering systems, then the differences between a version 2.01 and 2.19 are very much minor changes. Typically speaking, versioning goes like this -
major.minor[.maintenance[.build]]
A change in the second decimal place number typically indicates minor changes, such as cleaning up a menu or adding a slightly different sub menu. If there were any changes to the physical hardware, then that would trigger a MAJOR number update. So an ET 3.0 would have different hardware in it than an ET 2.0
The inside scoop from our resident Pentair Fanboy (he knows who he is!!) is that Pentair is internally developing a new automation system BUT there is currently no scheduled build or release date.
