Signal Messenger's whole design philosophy from the ground up is focused around taking privacy and security at a top notch level and to collect as little user data as possible. It had already omitted storing information like user avatars, profile names, contacts, and a dozen more. Its next move, and probably with a much better protection for spam and abuse, is hiding who is messaging whom, which comes to beta tester in the form of version 4.30.5 and 4.30.6. Below is the changelog, applicable for both.
★ Support for "sealed sender" messages
★ We updated the built-in emoji set and added support for "Fitzpatrick" customization. Look for the arrow next to some of your favorite emoji characters, then tap and hold to make a selection.
If you want to take a risk and enable "sealed sender" messages from non-contacts, just toggle the 'Allow from anyone' option in the Privacy settings of Signal Messenger.
For a more technical explanation about how "sealed sender" messages work: www.signal.org/blog/sealed-sender
Another new feature in this beta release is emoji skin tone variants. There is an arrow icon right next to every supported emoji, which indicates that it has skin tone variants and by long-pressing, you get access to them.
The two features in this update seem to be worth trying out. Stay on the lookout at TestingCatalog.com for more coverage of beta app updates.