Given all of the changes introduced in the Apple Pencil 2, it only works with the new 11 and 12.9-inch iPad Pro models and it is not compatible with older iPad Pros or the sixth-generation iPad.
Likewise, the current Apple Pencil will not work with the new iPad Pro models and is limited to older iPad Pro models and the sixth-generation iPad.
That means if you're upgrading to the new iPad Pro from an older iPad Pro model and already have an Apple Pencil, you're going to need to buy a new second-generation model if you want an Apple Pencil to use with the upgraded tablets.
The new second-generation Apple Pencil is priced at $129 and can be ordered starting today, with the accessory set to be delivered on November 7.
Apple's new Apple Pencil is $30 more expensive than the existing Apple Pencil, which is priced at just $99.