Whatsapp will eventually get to Dark mode on the iPhone soon. The new beta version of WhatsApp for iOS appears with Dark Mode enabled, suggesting that it will be available to all iPhone users soon.
MRCoomers reports that the test notes include dark mode, though no beta testers have shared what the mode looks like.
However, it is a long-awaited feature. Most popular iOS apps have already been updated to include Dark Mode, and WhatsApp TipsApp is a major neglect. WhatsApp is testing a similar dark theme for its Android app, which appeared in beta last month.
It's easy to get WhatsApp Beta for Android, with apk and side-load (at your own risk), but iOS users will have to join the months-long WhatsApp WhatsApp Tesflight program. With both iOS and Android beta versions of WhatsApp now showing a dark mode, it won't be long before everyone can try it.