You may have heard a bit of news about a new thumbnail feature for themes coming to WordPress 2.9. Yes, you’ll be able to easily upload a post thumbnail. However, it’s not just thumbnails. The image will have various sizes. So, I’m going to refer to this feature as the post image feature. In this tutorial, I’ll be covering the various things you can do with the post image feature. Some things will be specific to end users while others will be useful for theme and plugin developers.