It is said they will update it with A14X and 5G come end of the year but i guess it depends if people class that as a good upgrade or not. All it would be is a faster chip.I bet Apple only released this so that developers could adapt their apps to take advantage of the LIDAR sensor and extra RAM(new iPad Pro has 6GB on all variants now), in preparation for iPhone 12 Pro getting the same treatment, 6GB RAM + LIDAR sensor.
Or, Apple will do another refresh in October 2020, adding U1 chip, an A13X or even A14X CPU, and 5G. Meaning that this iPad Pro is only a stop-gap measure to keep sales going.