For now, the GTX 1070 Ti looks to fill a small price gap. You can save ~$50 by buying the 1070 Ti and still achieve GTX 1080 performance, which doesn't exactly redefine the market. Nvidia is obviously hoping that by releasing a new GPU and creating a buzz, sales will pick up as a result and hold them over till the next major release. In any case, if you're in need of a new $400-$500 graphics card, the GTX 1070 Ti wouldn't be a mistake to purchase. It's a solid offering even if it's not that exciting.