[3] The latest batch of sets entered service on 15 February 2019 and use a different headlamp setup, with a dual headlamp-taillamp fixture; as opposed to shield-beam headlamps as used on the first eight sets, these use LED fixtures.

[4][5][additional citation(s) needed] The first 12-600 series set (cars 12-611 to 12-618) was delivered from the Kawasaki factory in Hyōgo Prefecture in August 2011.

[7] On 30 March 2015, Toei Subway announced it had ordered a second batch of 12-600 series trains.

On these trains, the magenta stripe is located at the height of the windows so it can be seen above the platform edge doors installed at every station.

[8][9] 11 additional 12-600 series trainsets (88 cars) were ordered from Kawasaki Heavy Industries in 2016.