WABetaInfo first revealed that WhatsApp was working on a dark mode for iOS in October 2018.
iPhone and iPad users received a dark mode feature for iOS on 19 September, which reportedly may have prompted WhatsApp to redesign the unreleased feature.
The reworked themes are available in a preview version of WhatsApp for iOS.
One dark theme configuration uses deep black colours for the backgrounds of tables and cells. The second option uses slightly lighter shades, resulting in a grey tone.
Another rumoured third option has not been implemented yet.
For chat bubbles, both of the configurations will use the same dark grey shade for incoming messages and dark green for outgoing texts.
According to WABetaInfo, it is not clear if users will be able to select a preferred configuration once WhatsApp rolls out the update, or if only one of the configurations would be applied, but it is likely that a single configuration will be available.
WhatsApp has not announced a launch date for its dark mode update. The company is also reportedly working on a dark mode for its Android app.
