Blender is always changing. There is a new release almost every month. If you miss a release, you could be missing a vital tool in your 3d toolkit. That is why you need to keep up with the latest news and releases. First, you can check Blender.org frequently. The latest releases are on that website first.
Also, you can download the latest build on the same website. The latest builds are not as stable as the official releases, but you can get a sneak peek at the new features in order to stay ahead of the game, and master the techniques used with the new stuff.
Graphicall.org has many builds for different aspects of 3d imaging. There are builds for the latest features, and builds for old discontinued add-ons.
You can keep up with the developers by reading the developer meeting notes on Blendernation.org. The developer meetings are every week, so you can get a weekly update on what is happening with the development of the new release of Blender.
Blender Nation has a RSS feed. You can access it on their website. This way you can access it with RSS enabled devices, instead of frequenting the website.
Happy Blending,
Nick bobryk
Bobryk 3D 