The best (IMO) free image viewer gets another new version. Several improvements!
http://www.faststone.org/FSViewerDetail.htm

Version 6.0 (October 28, 2016)
* Improved the Straighten/Rotate tool. Now you can rotate and crop the image within the same window

* Added Auto Next Folder option to the Viewer tab of the Settings. This option lets you proceed to the next folder
automatically when end of current folder is reached. Alternatively, you can press Alt + left/right arrow keys at the
beginning/end of current folder to navigate into adjacent folders

* Added Remember Last Viewed File to the Viewer tab of the Settings

* Added two Zoom Filters (Lanczos_Softer and Bilinear) to the Viewer tab of the Settings

* Added Full Screen Preview to Crop Board

* Added Update File Timestamp option to Save As dialog

* Added Copy Image (Ctrl+Shift+C) to the right click menu on thumbnails

* Added Copy to Clipboard to Image Strip Builder

* Other minor improvements and bug fixes