Bumping with a quote from Pentax gear thread:
>>3942274>New Pentax telephoto lens patents spotted, new lenses might be coming in the following focal ranges:>70-300mm F4.5-5.6 SR>100-400mm F4.5-5.8 SR>150-600mm F5-6.3 SR>125-600mm F5-5.6 SR>Posting the Pentaxforums link because the patent link is a whole lot of moonrunes vomit and it is explained better in the forums: https://www.pentaxforums.com/forums/16-pentax-news-rumors/431269-new-telephoto-lens-design-patent.htmlPersonally I'm not super excited as I'm not a tele shooter, but I guess bird & wildlife photographers might be interested in those longer ones. I took a look at the forum and it seems these might be designed to cover the 35mm format image sensor.
Pic unrelated