Just got an email from B&H that Sigma 18-35mm f/1.8 will be available on 1st July 2013 for US$ 799 ... definitely buying one for my D7100
http://www.bhphotovideo.com/c/search?Ntt=Sigma+18-35mm+f%2F1.8+DC+HSM+Lens&N=0&InitialSearch=yes&sts=ma&Top+Nav-Search=
http://www.bhphotovideo.com/c/search?Ntt=Sigma+18-35mm+f%2F1.8+DC+HSM+Lens&N=0&InitialSearch=yes&sts=ma&Top+Nav-Search=