I have a question. I am interested in buying the Indie license, which will run for a year. But it's not exactly clear if I will get the updates of the app within this year. I imagine there might be a 16.5 release really soon, so should I wait a month or so till it's out or am I safe buying a license now, assuming I will have an free upgrade?
Yep updates are part of the deal. Even if you don't have a license and are just running Apprentice you can download and install the latest daily build.