Speedstar 4, great neutral lightweight shoe, many use it as a race shoe but is designed as neutral lightweight performance. Not a lot changed from the Speedstar 3 on this shoe.
Tarther, a neutral 7.4 oz flat this shoe has been a mainstay in the Japanese market and now is being released in US slip lasted, solyte midsole, and duosole outsole.
Pirhana SP3 extremely light racing flat with solyte midsole (what midsole there is!) duosole outsole, same tooling overall as prior model, but a more minimal upper brings the weight of this down to an amazing 4.6 oz!
DS Racer 8 YES IT'S BACK!!! DS Racer has long been many peoples fave flats and many hated to see it leave the asics lineup, still will offer a very mild medial post to give at least some medial support, magic sole, slip lasted, solyte, weighs in at 7.6 oz!
Hyperspeed 4 basically just cosmetic updates, nothing changes functionally. 7.0 0z
No images yet - stay tuned and watch this space!
Props to Jamie Dick