high power density batteries, fast charging, faster and more reliable wireless comm
Not so obvious:
-security - encryption on everything, my data only accessible by me
-ownership identification (like blockchain without negatives)
-cloud computing - instead for having usually underpowered solutions in mainstream tech, one has a cloud machine at home or by a provider, and the usual tech would be a thin client (smart tv, werable, phone) and the power depends on the power of the cloud + all your data are central & can be protected by enterprise solutions
-advanced AI in OS - imagine telling your os "a couple of weeks back i was ordering a pizza, but i dont remember from which restaurant, do you know?" instead of going to history to your IE, Chrome (you dont know which browser u used) and checking the call out list on your phone to see which number you have called (as the browser history shows x restaurants you were browsing through), the OS would understand your question and deliver results in an instant
-new faster, more efficient input devices - i mean kybd and mouse are with the PC since forever and coding and writing emails and selecting menus and all that repetition feels so time-lost sometimes, like you know what you want to do write, etc in an instant in your brain, how much time is then spend to transfer it into movements, clicks ... Even something as a cam tracing your eyes to replace mouse movement, imagine how much time would you save...