I've had the application for about 3 months. I bought straight into the Enterprise version. I have no affiliation with Erel, apart from using this product B4A.
In that time, we've gone from v1.3 through two Betas (v1.41, v1,42) and now we are on a Release version, v1.5.
I don't know how Erel manages to have a life outside of B4A, as the amount of work he puts into this product and into supporting the Forums (along with several other experts and many other keen users) is superb.
I think that you can be assured that you will be getting plenty of updates in a 2 year period!
JMB