What is this next to headphone jack?

[8CoreWhore]

It looks like a tray to an SD card, but it's not listed. A sim tray maybe?

 

[ckeck]

Pretty sure those are the microphones.

 

[8CoreWhore]

Pretty sure those are the microphones.

In the video, I could have sworn I saw an oblong line encircling the two, like it would open, but you're probably right.

 

[illitrate23]

my 13" MBA has the same two dots on the left side, just below the microphone jack also. microphones i guess also

 

[GGJstudios]

Pretty sure those are the microphones.

Yep. As stated in the specs, "dual microphones".

 

[redheeler]

Dual microphones. Apple's recent rMBPs and MBAs have them as well, next to the headphone jack on the left side.

 

[Meister]

Dual microphones. Apple's recent rMBPs and MBAs have them as well, next to the headphone jack on the left side.

Pretty obviously red heeler is correct.

 

[LeeTom]

Dual SIM-card ejection holes. #

 

[paulopadopa]

Dual SIM-card ejection holes. #

iPhone 7+S confirmed!