More information will be forth coming after the USA release of the TZT3. In regards to the TZT2; its software is not frozen. When the TZT3 releases, we will have TZT, TZT2, and TZT3 all available for sale. We should be seeing some software updates coming for each series, over the next 12 months including v7 for TZT2. What v7 offers TZT2, when available, is still unclear. We have been told that it will allow some better integration with the Nobeltec TZ Pro v4. We don't expect v7 software release until sometime after the TZT3. Until our official release of the TZT3, there isn't much else to be said other than what can be found at NavNet.com. We will not be expanding beyond that, until we learn more ourselves and have our official release in Miami. I will say, I have seen and operated the TZT3 units on the water and I am very happy and excited about what it brings.