According to the latest reports, WhatsApp for iOS 23.13.80 is labeled as a compatible update. The striking thing here is that the official App Store changelog does not mention any news about the new interface. Still, this will be widely rolled out to iOS users on the stable release. If you want to check if the translucent bar is available on your handset, just check the WhatsApp app on your iPhone from the app store. After that, you need to restart the app for the changes to take effect. Open any section of the app to check whether the transparent effect is available or not.