That's also what I thought, it didn't felt like 0.3, more like 0.2+. There is also no new folder called 0.3 and new renders were put into folder 0.2, could it be that author himself thinks of this update as a 0.2+? I think having new content in Main Story Quest is a good reason for incrementing to 0.3, 0.4, etc. If there's no MSQ content, just keep incrementing a, b, c, d.
I don't think update was good since it didn't entertain me that much, but I think it was useful and necessary for the story. If it were called 0.2c, there would be less misunderstanding, for sure.