Ok theres another post started by myself regarding Blacksmithing for WotLK and its quickly turned into a professions discussion. I found this website, i am sure some of you have seen it before. But when you go to the site, select the profession you are interested in and then go to the "Expansion" Tab and make sure only wotlk is selected so you can see whats new for you in coming expansion and maybe help you decide if you want to keep what you have or unlearn your skills and max new ones out before the patch. Oh and to save money i would actually recommend not maxing them out but get them to 355ish. The link below is on JC at the top of the page is where u select a new profession to look at.
http://wow.crafterstome.com/recipes/jewelcrafting.html