You have to patient.
AirNav RadarBox is the first worldwide flight tracking software capable of getting data from the internet/hardware. It requires a lot of time to change the application and a lot more to test. It is a work of great responsability since we have many important customers (airlines, airports and research companies) working on it so we will never release it unless the criteria above are guaranteed.
As we have told before we want V1.4 to be fast, robust and reliable. It has to use low CPU and low RAM values. We will do whatever is needed to achieve this. If we cannot guarantee it we will simply not release it. That's why it hasn't been released yet.
Just a curiosity RadarBox Software has now 250 thousand lines of code.
So please continue to be patient. V1.3 works Ok for 99% of the users and V1.4 has a lot more interesting features.
Unlike other companies that continue to promise features that they know will never be released...AirNav Systems promises and delivers.
So you can be 100% sure it will be out when all issues are corrected.
For dates, see our post above.