Apple plans to release a special 20th-anniversary iPhone next year with the biggest design changes since the iPhone X, according to Bloomberg's Mark Gurman.

Unveiled by Steve Jobs in 2007, the iPhone turns 20 next year. To mark the occasion, the report said Apple plans to release a 20th-anniversary iPhone with "curved glass around all corners and edges" and thinner bezels around the screen.

"It will be the biggest overhaul to what is now the iPhone Pro line since the iPhone X," the report said, but no further details were provided.

Released in 2017, the iPhone X was the first iPhone with Face ID. The removal of the Touch ID button allowed for the iPhone X's screen to extend more towards the edges of the device compared to previous models. It seems like the 20th-anniversary iPhone would go a step further than this by truly having the screen wrap around the corners and edges of the device, for a seemingly all-glass appearance.

Rumors about the 20th-anniversary iPhone have gone back and forth, but based on Gurman's latest reporting today, the device seems to be in the works still. However, it remains to be seen if Apple can fully achieve the ambitious design changes that are apparently in development, or if plans for the device will ultimately be scaled back.