It's not just games that are getting pushed back to next year. The release of the
PCI Express 3.0 spec
has been pushed back to the second quarter of 2010 meaning that cards that will be using that technology probably won't show up until 2011. It was done to make sure that backwards compatability was working properly as I'm sure you don't want to purchase a motherboard and find out your older video cards don't work with the newer spec.