(source: Brompton Bicycle https://www.brompton.com/)
Description of New 2018 Brompton
There is no big change in its specification but only small improvements/modification while 2017 model changed a lot.....
1. New Brake Calipers
Brompton Brake Caliper Dual Pivot (Front and Rear) will appear with new shape.
(source: Brompton Junction Tokyo https://bromptonjunctiontokyo.tumblr.com/)
(source: Brompton Japan http://www.mizutanibike.co.jp/)
2. M/H and P type Tyre change to Schwalbe Marathon Racer. Possible termination of Brompton original tyres.(source: Brompton Japan http://www.mizutanibike.co.jp/)
specification: 16x1.50 40-305 255g
(source: Schwarbe official page https://www.schwalbe.com)
3. New color
2018 Black Edition Brompton will have a new color, black lacquer, while Stardust Black will terminate. As long as I speculate, the new color is a bit similar to that color of Yoshi's original Brompton.
Other than black lacquer addition, Raw Lacquer changes to gloss type paint.
left: black lacquer, center: raw lacquer gloss, right: raw lacquer matt
(source: Brompton Japan http://www.mizutanibike.co.jp/brand/brompton/)
C-BAG
Current Black, Lagoon Blue, Berry Crash to only two colors, Black and Lagoon Blue.
S-BAG
Current Lime Green, Lagoon Blue, Black will continue and two more kinds with Brompton designed cover will be added.
O-BAG
There will be two types, Reflective/black and Grey only.
mini O-BAG
Only Black Reflective will be offered.
Saddle Bag Rucksack
A newly introduced bag for transportation. The new rucksack folds into a saddle bag to attach to the seat post when you start to ride Brompton.
(source: Y's Road Yokohama official page http://ysroad.co.jp/yokohama/)
You can climb a mountain with your Brompton in this rucksack. Please see the article Brompton Peak Hunting and Hot Spring.
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Please note that some information might be only applicable for Japanese market.
Related Article:
Brompton 2019 Model
References:
Brompton Japan: Black Edition 2018 coming on November 2!! (Japanese)
Brompton Junction Tokyo: BROMPTON 2018 Model (Japanese)
Loro Cycle Works Osaka: BROMPTON2018 Model (Japanese)
Y's Road Yokohama: 【2018 Model】New BROMPTON released! (Japanese)
Brompton anywhere to Go: Brompton 2017 Model (English)