The Chapter Tactics have now been updated for all of the Space Marine chapters from Forgeworld, and while many just simply link them to their founding chapter, many others have their own special rules. This helps drastically and will greatly enhance many of the hobbyists out there that enjoy these Forgeworld chapters.
Here is the link.
http://www.forgeworld.co.uk/Downloads/Product/PDF/F/FWchaptertactics.pdf
For those of you looking to start a new Space Marine army, this is an excellent resource to begin your research.