There is Almost Little to No Hope of a Sigma Lens for Pentax
If you go by what photographer Yoshimi Tanaka says then there seems to be almost no hope of one seeing a Sigma lens for Pentax in the near future. The photographer was reporting live from the ongoing CP+ show and he apparently was talking to some Sigma official who told him that there is almost little to no hope for any Sigma lens for Pentax in the near future.
シグマが発表した新レンズ4本の対応マウントは、シグマ用、ニコン用、キヤノン用のみ。シグマの「ある人」に、ペンタックス用はどうなんでしょうか？ とずばり聞いてみたのですが、その「ある人」の返事からは、ほとんど（まったく、とうぶん）望みはありません。残念だけど諦めたほうがいいかも。 pic.twitter.com/h6jwaBaKYP
— 田中希美男 (@thisistanaka) February 24, 2017
Sigma recently launched a series of ART lenses for Canon and Nikon which are already getting rave reviews from every quarter.