Today Ricoh Imaging announced and made available firmware updates for its flagship bodies K-3, K-1, and K-1 II, mainly for "(O)ptimized performance when attaching new lens HD PENTAX-D FA*85mmF1.4ED SDM AW," as it says in the descriptions. The updates for the FF bodies also claim to offer "(I)mproved stability for general performance".
The version numbers of the updates are given as K-3 (1.41), K-1 (1.53), and K-1 II (1.05), respectively:
http://www.ricoh-imaging.co.jp/english/support/download_digital.html
Already installed the firmware (Windows) for my K-3 and didn't encounter any issues.
Last edited by Madaboutpix; 06-18-2020 at 12:56 PM.
Reason: OS info added.