What all's in the integration levels?

[superflywheel]

I'm currently on E89X-10-09-511 and interested in updating to the latest integration level primarily for engine and dct updates but what other components would be updated in the process? (i-drive? etc) and are there noticeable improvements experienced from these other component updates (i'm aware of those in the engine and dct firmware)

My dealer won't update the integration level under warranty, so I'm wondering if it's worth paying for it from the dealer or just going with a stage1 tune that would bring up the engine and dct software anyway. If there was a broader range of improvements then I'd prefer to do the whole i-level and keep it dealer legit til my warranty runs out.