8.3.4 is now live and available to download at https://www.phaseone.com/en/Downloads/Materials/Download-Capture-One-8.aspx

OS support

Mac OS X 10.11

Camera support

File support: Sony ILCE-7RM2 (a7R II) uncompressed support
File and tethering support: Sony ILCE-7SM2 (a7S II) including uncompressed
File support: Sony DSC-RX1RM2 (prelim) including uncompressed support
Panasonic GX8 (revised)
EOS M3 (revised)
Leica Q (revised)
Pentax K3 II (revised)*

*Pixel shift mode not supported

Bug fixes

(Win) Fixed: Sync issue with Capture Pilot Geo tags and XMP
(Win) Fixed: Issue moving images with local adjustments

(Mac) OpenCL crash with Nvidia cards on OSX 10.11
Installers