Not exactly... Version 1, which is called "Diesel Railcar Simulator" is "early access" in the sense that I'm still going to release free updates (v1.x) to it which improve sounds, graphics and add a bit of content. Version 2 will be called something else since it's not only about BR diesel railcars but a more generic train sim. Version 2 will have a new name, much more content and features as listed in the future plans page. It will be sold separately because the new features will take so much effort and money (for outsourcing etc.) to develop that it wouldn't be sustainable otherwise. You can't expect to pay $15 and get several years of development and content for free. Compare to the other train sim products and their DLC.