Hi Vivian, I will share my experience just to help you to be aware and please make sure you do good rehearsal on NE on lower environment before moving to prod, 1. Homepage is no more supported , you can allow user to change sys_property but next release will make you missing this as well, so it's a big work specially if you have a menu item display. 2. Theme (default & dark) OOB , you are lucky if you are happy with these themes on NE otherwise it's one of big task to create default theme on NE not straight forward. 3. Some of liked functionality won't work like global search output ( cant be in list view), cant drag and drop breadcrumbs to make favourite, Edge won't refresh created favourite instantly. 4. Going to miss Connect, even there is so far no news anything coming related this. There are KB for some of issue with Servicenow and waiting to get resolution, i have these on top up of my head