I am adding designs to the template store at a healthy pace now, so it is not possible to feature every new design as a blog post. Head over to the store and check them out, this link will bring you to the latest additions. This view is chronological, and does not represent the breadth and variety of templates that are available. I encourage you to use the search box and see what comes up, it works really well now.
My objective is to get to such a variety in the store that I can move to a subscription revenue model: you can find a starter slide for every business concept you possibly would want to present. I need to find the "sweet spot": most PowerPoint template sites offer a huge amount of slides, but very few actual concepts, mostly permutations of images and text box layouts. Stock image sites have gone the the other way: millions and millions of similar compositions, but in the process they have diluted the quality and usability of the site. And of course, an image is in most cases not a finished presentation slide. The ideal is somewhere in the middle.