Yes, it's true.
I took my exam today (Feb 24, 2023) and got the "Congratulations! You have earned the PMP certification!" message after the exam. However, I was confused whether the message just to congratulate me completing the exam or it meant I passed. A few hours later, I got an email from PearsonVUE with the link to PMI for my score and overall Performance. I passed with T/AT/AT for People/Business/ Process.
Congratulations to all who got the message of "Congratulations" after taking exam. It did mean you passed!