Blade & Soul has released the video of the 9th class in Soul Party which was held on 15th Aug 2015. Other future update contents, including new map & dungeons, pet system and Trial of Infinity are also shown in the trailer.
The 9th class seems to be a fusion between Force Master and Kung Fu Master. The class seems to yield a knuckle and a ribbon at the same time. The video suggests that this 9th class is available for Gon and Kun races. The name of the class is currently unknown. It has been mentioned previously that the new class will not be released until early next year.
New Map & Dungeons
Concept arts of new map, world area & dungeons have also been shown in the video, along with new story lines.
Trial of Infinity
Trial of Infinity is a new variation of Mushin Tower with strong and random bosses at each level. Some bosses in the Trial of Infinity have been shown in the video as well.
Pet system will be introduced soon in Blade & Soul KR, but it has been released earlier this week in Blade & Soul CN. Pet provides defensive stats such as HP, and HP recovery.