Removing full front-end support for IE6, IE7 and IE8 also has many benefits:
- Many features are not available to IE8 and under: caniuse.com: IE 6,7,8,9
- Reduces the amount of code delivered to browsers on each request, potentially improving performance in all browsers e.g. html5please. Core now ships with jQuery 2
- Frees up time previously spent developing and testing IE6 and IE7 fixes, allowing core developers and contributors to work on other tasks.