Basic timeline from what I gather:
There's the new Radeons in October, course not really sure what to expect yet, although it strikes me as interesting that there have been so many deals on the midrange priced cards lately.
Then in November there will hopefully be some pretty sick deals on the rest of your computer's parts around Black Friday.
Spring 2014 will have the next generation Nvidias which will probably trump whatever AMD has out in October.
June 2014 will have DDR4 on sale en masse to consumers, and new Intel processors to support it. The DDR4 is supposed to be considerably faster, but both it and the new CPUs will most likely have high price tags to match.
Thanks. I think I'll put off my build a month or two so I can see the new GPU's and get the deals from Black Friday/Cyber Monday. I didn't know that DDR4 RAM was on the way either. That's very interesting.