From what I read, there are no changes to the Verbal and Quants sections. On the AWA side, the second set of 30 mins will be replaced by a new pattern called the Integrated Reasoning. This new section will include questions from 4 different categories:

1. Graphics Interpretation
2. Two-Part Analysis
3. Table Analysis
4. Multi-Source Reasoning

With this, the next-gen GMAT would have the following time-section split out:

AWA (1) - 30 mins
Quants - 75 mins
Verbal 75 mins
Integrated Reasoning - 30 mins

Sample questions here -
https://www.mba.com/the-gmat/nex-gen/int ... rmats.aspx

Regards
Hari