WhatsApp's latest beta version for Android features a dual panel interface for tablets. What usually happens in these cases is - such new features get tested in the beta channel for a while (it can be weeks or even months) and then they eventually make it to everyone. Obviously, we're hoping the same logic will apply here, as the dual panel UI makes a lot more sense on tablets than simply an enlarged version of the phone UI. The first WhatsApp version compatible with Android tablets came out for beta testers last year, although it didn't have the split view. You can see the new UI,...
Source: https://www.gsmarena.com/whatsapp_for_android_is_getting_a_dual_panel_view_for_tablets-news-57775.php