The new feature was found by WABetaInfo in beta version 2.17.130 for Windows Phone users. The feature not only allows users to change the number but also notifies contacts about the number change without losing chats and group data.
There are three options you can choose for this feature - share the new number with all of your contacts, or only to those contacts you have chats with, or you can also decide not to pass out your new number to any of your contacts at all.
WhatsApp beta for Windows Phone 2.17.130: new change number feature, to notify your contacts about your new number (DISABLED BY DEFAULT) pic.twitter.com/FpZWHH3MS3— WABetaInfo (@WABetaInfo) April 15, 2017
This feature will send notifications to all your groups automatically, regardless of which option you choose. Also, the ‘Change Number’ feature is disabled by default, so you must switch it on when changing your number.
If the feature goes live, it will solve several problems for users who lose out on WhatsApp chat when they change their numbers. Additionally, it also notifies user about the change sparing the user the misery to share the new number manually.
However, there is not timeframe for the launch of the new feature.
Separately, it appears the Live Location sharing feature that was recently introduced by both Facebook and Google will make its way to WhatsApp soon.
Coming to the Live Location sharing feature, @WABetaInfo claims that WhatsApp beta for Android v2.17.150 contains mention of the feature, however, it is disabled by default.