The purpose of the beta version of Legend is to get your feedback on the future direction and to verify bug fixes. The beta is usually a few days ahead of the normal version, but can sometimes be much farther ahead if we’re working on a big project. It is updated up to multiple times per day, so you will see the update notification quite often.
Switching to the beta version will ask you to sign in again.
How to switch to the beta version
In the web app
Just open https://beta.legendapp.com and sign in again.
In the desktop app
On Mac, click on the Legend menu in the top left of your screen and select Use Beta Version.
On Windows, press the Alt key to show the menu and select Use Beta Version from the File menu.
In the mobile apps
Open the settings, then select About Legend, and toggle Use Beta Version.
See the Beta Updates thread for details of changes.