Yonex hasn’t ran out of ideas of making new racquets:-). Astrox 77 has been given very good feedback since released at end of 2017. Namd Graphite seems has helped to improve the smashing power while not to loss much speed. Now Yonex has released the new Astrox 88 S and Astrox 88 D. S stands for Skill, D stands for Dominate.

Details please refer to the Yonex website.
http://www.yonex.com/company/news/badminton/astrox-88-s-skill-and-astrox-88-d-dominate-uniquely-designed-to-improve-doubles-player/