The new second-generation Apple Pencil that Apple introduced today alongside new iPad Pro models includes support for tap gestures and inductive charging when attached to an iPad Pro magnetically, a significant improvement from the lightning port-based charging of its predecessor. Given the complete redesign of both the iPad Pro and Pencil, it comes as no surprise that they are not backwards compatible. The Apple Pencil 2 will only work 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.
Apple Pencil won't work with the latest iPads
Given the lack of a charging port, it comes as no surprise that the original Apple Pencil will not work with the new iPad Pro models. Support 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 while the existing Apple Pencil is priced at $99.
Prima facie, it might seem infuriating but it makes sense, considering that it is impossible to charge the new Pencil using an older iPad and vice versa. Perhaps a lightning to USB C dongle could have helped get the older Pencil up to speed with the new iPad.
News Source: Macrumors