Niantic has announced that the update to allow players to GO Beyond level 40 is now live! In addition to the level-up redesign, some exciting Pokémon GO gameplay updates are also active.

GO Beyond: Level up redesign coming soon; level cap increased to 50!

UPDATE: 12/7/2020: Trainers, you can now GO Beyond level 40! In addition to the level-cap increase, some exciting Pokémon GO gameplay updates are now live!

Updates to XP
XP has been increased for the following activities.

• Catching a Pokémon with a Nice Throw: 10 XP to 20 XP
• Catching a Pokémon with a Great Throw: 50 XP to 100 XP
• Catching a Pokémon with an Excellent Throw:100 XP to 1,000 XP
• Catching a Pokémon with a Curveball Throw: 10 XP to 20 XP
• Evolving a Pokémon: 500 XP to 1,000 XP
• Catching a Pokémon or spinning a PokéStop the first time in a day: 500 XP to 1,500 XP
• Achieving a Pokémon catch streak or PokéStop spin streak of seven days: 2,000 XP to 6,000 XP
• Giving a Pokémon a Berry at a Gym: 20 XP to 50 XP
• Spinning a PokéStop: 50 XP to 100 XP
• Defeating a Gym: 100 XP to 1,000 XP
• Defeating a Pokémon at a Gym: 100 XP to 300 XP
• Hatching a 2 km Egg: 200 XP to 500 XP
• Hatching a 5 km Egg: 500 XP to 1,000 XP
• Hatching a 10 km Egg: 1,000 XP to 2,000 XP
• Hatching a Strange Egg: 2,000 XP to 4,000 XP
• Catching a Pokémon in AR mode: 100 XP to 300 XP
• Unlocking a new Pokédex entry: 500 XP to 1,000 XP

Pokémon encounters

• The chance of encountering Smeargle after you take a snapshot has been increased.
• Nanab Berries are now more effective, fully calming Pokémon down in encounters.
• You’ll now earn more Candies from catching a Pokémon you’ve given a Silver Pinap Berry.

Research

• The “Make 3 Excellent Throws in a row” task now leads to an encounter with Gible instead of Larvitar.

Buddy Adventure

• You can now earn up to three hearts each day from battling with your buddy.
• Your buddy can now more easily get excited.
• Golden Razz Berries and Silver Pinap Berries are more effective when you give them to your buddy.

Stardust

• The Stardust you’ll earn from giving a Pokémon a Berry at a Gym has been increased from 20 to 30
• Beginning on December 7, you’ll earn more Stardust from weekly Adventure Sync rewards.

Source: https://pokemongolive.com/post/gobeyond-level40