What's new in Firefox Beta for Testers 138.0b6

From version 87.0.0-beta.2:

Thank you for testing Firefox Beta! We are excited to introduce a major upgrade and a brand new design, and as always we count on your feedback.

Key highlights:
-Bottom nav bar for easier access with option to customize
-Dark & light themes
-Collections to organize your tabs
-Improved support for Progressive Web Apps

More details at support.mozilla.org/kb/firefox-preview-upgrade-faqs

About Firefox Beta for Testers 138.0b6

Firefox Beta for Testers variants

All versions
Firefox Beta for Testers 138.0b6
April 12, 2025 GMT+0000

Version:138.0b6

Uploaded:April 12, 2025 at 3:34PM GMT+0000

File size:51.33 MB

Downloads:19

Firefox Beta for Testers 138.0b5
April 10, 2025 GMT+0000

Version:138.0b5

Uploaded:April 10, 2025 at 4:20PM GMT+0000

File size:51.33 MB

Downloads:31

Firefox Beta for Testers 138.0b4
April 8, 2025 GMT+0000

Version:138.0b4

Uploaded:April 8, 2025 at 5:04PM GMT+0000

File size:51.31 MB

Downloads:30

Firefox Beta for Testers 138.0b3
April 5, 2025 GMT+0000

Version:138.0b3

Uploaded:April 5, 2025 at 4:27PM GMT+0000

File size:51.29 MB

Downloads:34

Firefox Beta for Testers 138.0b2
April 3, 2025 GMT+0000

Version:138.0b2

Uploaded:April 3, 2025 at 5:23PM GMT+0000

File size:51.4 MB

Downloads:39

Firefox Beta for Testers 138.0b1
April 2, 2025 GMT+0000

Version:138.0b1

Uploaded:April 2, 2025 at 5:07PM GMT+0000

File size:51.39 MB

Downloads:15

Firefox Beta for Testers 137.0b10
March 25, 2025 GMT+0000

Version:137.0b10

Uploaded:March 25, 2025 at 7:01PM GMT+0000

File size:50.62 MB

Downloads:91

Firefox Beta for Testers 137.0b9
March 22, 2025 GMT+0000

Version:137.0b9

Uploaded:March 22, 2025 at 5:25PM GMT+0000

File size:50.6 MB

Downloads:69

Firefox Beta for Testers 137.0b8
March 20, 2025 GMT+0000

Version:137.0b8

Uploaded:March 20, 2025 at 6:08PM GMT+0000

File size:50.6 MB

Downloads:31

Firefox Beta for Testers 137.0b7
March 18, 2025 GMT+0000

Version:137.0b7

Uploaded:March 18, 2025 at 3:15PM GMT+0000

File size:50.57 MB

Downloads:46