It looks like WhatsApp recently sent out a new update to its app for Android tablets. This update now includes support for dual windows so that it will be much easier to navigate around the interface if you are running WhatsApp on an Android tablet.
This means that it will be significantly easier for you to navigate around the app on a tablet compared to how it looked before. The update is not a beta, but a full-scale version that is being sent out to everyone. Latest ski UT update flow. However, it seems that iPads are not yet supported for this.