The 2.26.1.77 update is a release candidate that includes all bug fixes from previous beta versions submitted to the Play Store. It is essentially a final beta version and it is more stable than a beta.
If you are not a beta tester, we recommend updating to this version. However, if you are a beta tester, it is advised not to update to the 2.26.1.77 as it is intended for non-beta testers only.
If you are not a beta tester and want to find out what's new in the 2.26.1.77 update, you should visit the Android page for more information about the previous beta versions. It's worth noting that if a feature was introduced in a previous beta version, it may not be included in the 2.26.1.77 update, as it might not be available to everyone yet.
To download the latest release candidate for Android, please visit the official WhatsApp website. Please be aware that this version may not be available on the Play Store.