The newly announced iPad Pro hides a sneaky upgrade option that Apple didn’t mention during its event today. When you cough up the $600 it costs to jump from the 256GB base model iPad Pro to the 1TB version, Apple doesn’t just double the RAM along with that — it also puts a faster chip inside, going from a nine-core M4 chip to a 10-core version.

This is the first time Apple has offered a processor upgrade on a specific tablet model — in the past, no matter what other options you…