Voigtlander 40mm f/1.2 on the Sony A7 (image by Optyczne.pl).
The new Voigtlander 40mm f/1.2 manual focusing FE lens has been announced in Japan by Cosina. The dollar converted price is around $1,200. Image samples can be found here: cosina.co.jp/gallery/iida-40-1_2/index.html
And those are the full lens specs: