You now have one all things Castle RSS feed to subscribe to instead of hunting for content on many various blogs. It has some rules set so that it collects content from only a handful of blogs, skipping posts that are not related to its main topic. It comes mostly from committers and few other blogs that have proven in delivering high quality content. If you know any blogs that you think should be added to the list, let us know, on the list.
You can read, and subscribe to the feed here.