CKEditor 4.16.0 has been released: https://ckeditor.com/blog/CKEditor-4.16-with-improved-image-pasting-High...
See also:
#1858210: [meta] Content editing experience follow-ups — in-place editing and WYSIWYG
#1950098: Update CKEditor library to 4.1
#2036253: Update CKEditor library to 4.2
#2039163: Update CKEditor library to 4.4
#2271051: Update CKEditor library to 4.4.4
#2345961: Update CKEditor library to 4.4.5
#2384581: Security: Update CKEditor library to 4.4.6
#2415111: Update CKEditor library to 4.4.7
#2521820: Update CKEditor library to 4.5.3
#2321583: Update CKEditor library to 4.5.5
#2663566: Update CKEditor library to 4.5.7
#2698587: Update CKEditor library to 4.5.8
#2724225: Update CKEditor library to 4.5.9
#2765751: Update CKEditor library to 4.5.10
#2797427: Update CKEditor library to 4.5.11
#2828494: Update CKEditor library to 4.6
#2848215: Update CKEditor library to 4.6.2
#2893566: Update CKEditor library to 4.7.1
#2904142: Update CKEditor library to 4.7.2
#2908864: Update CKEditor library to 4.7.3
#2926932: Update CKEditor library to 4.8.0
#2962330: Update CKEditor library to 4.9.2
#2983516: Update CKEditor library to 4.10.0
#2999691: Update CKEditor library to 4.10.1
#3035933: Update CKEditor to 4.11.3
#3050757: Update CKEditor to 4.11.4
#3072382: Update CKEditor to version 4.13
#3105327: Update CKEditor to version 4.13.1
#3120022: Update CKEditor to version 4.14.0
#3171952: Update CKEditor to version 4.15.0
#3183749: Update CKEditor to version 4.15.1
Release notes snippet
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