SNH48 introduced 4 new members to its teams during the Xingmeng Theater 6th anniversary stage on September 14th. Two will go to Team SII and one a piece to Teams HII and X.
You can watch their introductions in the video at top of page.
The new members are (click to enlarge):
For Team SII: Liu LiQian and Chen YuZi
For Teams HII and X: Jiang Xin and Pan LuYao