How to identify assembled top case after MBP repair? My MacBook Pro (2016) just needed another top case replacement, as keys did not work as expected. Since the last replacement, Apple has established a Keyboard Service Program for MacBook and MacBook Pro and introduced a (more or less) protective membrane in recent MBP keyboards. 

When I picked up my repaired notebook (not from Apple directly, but an Apple Premium Service Provider) I asked if the replaced keyboard has this membrane. The staffer couldn't tell, but said that this has recently been the case for “some replacements”. 

Can I somehow identify which keyboard/top case generation is installed? Is the membrane visible?
The iconography on the 2018 keyboard does differ from that on the 2017 and 2016 keyboards. This can be used to identify the generation.

The YouTube video New 2018 MacBook Pro Keyboards MIGHT fix Keyboard Problems shows the differences between these three models' keyboards. The 2018 option key has a far taller icon than the 2017 option key.



The MacBook Pro 2016 and 2017 models will not receive the 3rd generation MacBook Pro 2018 keyboard according to the MacRumors article: Apple Says Third-Generation Keyboards Exclusive to 2018 MacBook Pro.