A:Answer The new version is just called a "Surface Pro". It would be the 5 if they used a number. The new Pro uses the same named processors, they are just the next generation of same. So a new Pro 4 with an I5 processor will run about 10% slower than a new Pro with an I5. You can't tell the difference between a new Pro and a Pro 4 just looking at them. I bought a Pro 4 for my wife today because of the price point and she just uses it for email, web surfing, and updating her Realtor wireless key.