Seasonal Firmware Updates for K-1 bodies and K-3 III

https://www.ricoh-imaging.co.jp/english/support/digital/k1.html

https://www.ricoh-imaging.co.jp/english/support/digital/k-1-2.html

https://www.ricoh-imaging.co.jp/english/support/digital/k-3-3.html

And, according to Pentax Rumors, further updates with new custom images by theme will be delivered quarterly.

But what I really can't understand why any Pentax user needs to have particularly lenses in order to use those new Custom Images. It doesn't make sense at all unless Pentax wanted to promote their stocked lenses with such an inferior means.