Question: what are the core new features of windows 10?
Answer: Start Menu Returns. It's what Windows 8 detractors have been clamoring for, and Microsoft has finally brought back the Start Menu. ... 
Cortana on Desktop. Being lazy just got a lot easier. ... 
Xbox App. ... 
Project Spartan Browser. ... 
Improved Multitasking. ... 
Universal Apps. ... 
Office Apps Get Touch Support. ... 
Continuum.