Just spotted elsewhere on the net new Sigma Lenses - 85/1.4, 17-50/2.8OS, 70-200/2.8OS, 8-16, 50-500OS (all HSM).
Announced in the last 24hrs @ PMA 2010 in the US.
some links with first info on new lenses:
85mm F1,4 EX DG HSM (full-frame with HSM focusing)
http://www.dpreview.com/news/1002/10022015sigma85mm.asp
Rear-focus, rounded 9-blade aperture, 77mm filter, hood has adapter for more shading with DX camera
17-50mm F2,8 EX DC OS HSM (DX lens with HSM)
http://www.dpreview.com/news/1002/10...ma17mm50mm.asp
70-200mm F2,8 EX DG OS HSM (also full-frame with Sigma's image stabilization and HSM)
http://www.dpreview.com/news/1002/10...a70mm200mm.asp
Magnification ratio is 1:8, closest focus is 55". 9 rounded aperture blades. 77m filter thread, hood extender for DX cameras.
8-16mm F4,5-5,6 DC HSM (DX ultra-wide lens with HSM)
http://www.dpreview.com/news/1002/10...gma8mm16mm.asp
50-500mm F4,5-6,3 DG OS HSM
http://www.dpreview.com/news/1002/10...a50mm500mm.asp
apparently no pricing info yet etc - but looks very interesting