So what’s the new material? I phoned a friend. Meet Eric Beaton, who runs @polyengineering’s materials engineering lab. We used a Fourier Transform Infrared (FTIR) spectrograph to fingerprint both plastics.

As you can see, they’re dramatically different. Apple switched to nylon! pic.twitter.com/FexkiQwozQ

— Kyle Wiens (@kwiens) May 24, 2019

We found not one, but two, new "materials" in the keyboard of the 2019 MacBook Pro 15" with Touch Bar: https://t.co/sUehPMx9ll pic.twitter.com/Mqa8goaNz1

— iFixit (@iFixit) May 24, 2019

iFixit has details on “new materials” in the MacBook Pro keyboards. Small tweaks to membrane & metal switch.

My take: when it comes to consumer trust in Apple’s butterfly keyboard design, different materials won’t make a material difference.

More here: https://t.co/AWP3drcxMZ pic.twitter.com/C3EqqS031g

— Dieter Bohn (@backlon) May 24, 2019

Apple told @joannastern that “it has made a change to a material in the keyboard mechanism.” We found two changes. The first change is the material they made this membrane out of.

Left: 2018, Right: 2019.

They are visually and mechanically different. pic.twitter.com/TR2clIATZM

— Kyle Wiens (@kwiens) May 24, 2019

The MacBook butterfly keyboard lineup—from left to right: 2015, 2018, 2019

Check out our teardown to see what "new material" we found in the #MacBookPro: https://t.co/60jJBJRppg pic.twitter.com/BfaOIuepyK

— Kay-Kay Clapp (@kaykayclapp) May 24, 2019

For whatever it’s worth, the material of a buckling dome can make a VERY significant difference in reliability. ETA chose bump switches of this type that failed constantly. Lepracon’s were SO much better. (neither as good as Avo/Celco ‘Schadow’ buckling springs bit LP was close). https://t.co/LiHqKKMZuM

— Jon Alper (@Jon_Alper) May 24, 2019

So... it's the same... design, then? You just... changed the material?https://t.co/FRLtfFTOEg

— TechLinked (@TechLinkedYT) May 24, 2019

iFixit Says 2019 MacBook Pro Keyboard Has 'Subtle' Changes to Design and Materials https://t.co/jqIMY1e4UB pic.twitter.com/1Gxo1PUCZt

— Apple Streem (@applestreem) May 24, 2019

iFixit Examines Apple’s 4th Try at Butterfly Keyboard - https://t.co/8gcmyMUaQc pic.twitter.com/CiADW8WDDE

— Paul Thurrott (@thurrott) May 24, 2019