On claimed iPhone logic board images via Slashleaks:
The iPhone X, XS and XR used L-shaped logic boards. This latest leak implies a return to a more standard, rectangular, logic board design.
Whilst we don’t expect major visual changes to the iPhone 11 chassis outside of the new camera module, it seems like there will be a more significant design shakeup for the internal components.
Apple appears to be redesigning the internal logic board to allow for a larger battery and to make room for the new triple-lens camera bump. As a straight rectangle, it should be able to nestle on the right-hand side of the phone, maximising room for a big battery on the left.

Analyst Ming-Chi Kuo has predicted increased battery life across the upcoming iPhone range, partly to support the wireless charging features these devices are expected to offer.
He has also claimed next-generation high-end iPhones will offer a new super-wide 12-megapixel lens, 3x optical zoom and improved night vision.

Just last week we heard repeated claims that the new iPhones will boast 3-lens cameras arranged in a square ‘bump’.
MacDailyNews Take: The move away from the L-shaped logic board is interesting – it implies the company may have figured out how to minituarize even more components, which may help provide even better battery life.
SEE ALSO:
Fresh leak again hints at square camera in upcoming iPhones – July 2, 2019
Leak suggests iPhone XR successor could have square camera bump similar to iPhone 11 – May 8, 2019
New leak reveals Apple’s seamless iPhone 11 and iPhone 11 Max design – April 29, 2019
New iPhone 11 leak highlights how much better Apple is at hardware than Android peddlers – April 26, 2019
Apple’s next-gen iPhones to feature new back glass design, redesigned mute switch, and more – April 25, 2019