Apple's rumoured iPad Pro will feature a 12.2-inch display and ship with a next-generation A9 processor on board, according to the latest reports, Digital Spy said.

Japanese magazine Mac Fan (via Macotakara) claims to have obtained schematics for the tablet, listing its dimensions as 305.31mm x 220.8mm x 7mm.

The publication refers to the device as the iPad Air Plus, hinting at a potential name change for the large-screen slate that would bring it in line with the iPhone line.

The report supports previous rumours that the tablet will measure in as thin as the iPhone 6, but some sources have pegged its display at 12.9 inches.

Mac Fan claims that Apple is planning to release the iPad Pro alongside a fourth-generation iPad mini between April and June 2015.

Earlier reports have cited an early 2015 release for the device, which was originally tipped for launch alongside the iPad Air 2 and the iPad mini 3.