You can now download the software for the Ricoh Theta Z1 (reviewed here), including the Ricoh Theta Stitcher plugin for Lightroom for both Mac and Windows. You can download the Theta Z1 software here.
Ricoh also included an update for the Theta V (reviewed here) which would enable the app to control the exposure in video. Previously, there were no exposure controls for video. Now, you can use ISO priority, shutter priority, or full manual exposure mode in video.
If you’d like to try samples of the Z1 in Lightroom, see the main article, which has samples in JPG and Raw DNG.