APS-H. Why? I really see no point in it anymore. It served a purpose when FF was wildly expensive and APS-C wasn't up to the IQ. It had an added advantage of faster frame rates and a higher useable ISO, great for low light level sports shooting. Now, with improvements in IQ in other sensor formats, the reason no longer exists for the format to hang around. It really is a no mans land for formats.
From Canon's point of view it could mean that their lens R&D only has to worry about EF lens if APS-C development is not at the high end - and we get more high quality, budget lens like the shorty forty instead