Updated on March 28th: Signups are now closed
A few days ago, a Bambu Lab employee with the username SirWill published a post on the Bambu Lab forum telling us that a new firmware is getting ready for the P1 series and that Bambu Lab is looking for more private testers before releasing it in the public beta.
Please note that you need to have an account on the Bambu Lab forum, which is the same one your printers are connected to.
Bambu Lab explains that, as with every beta software, the firmware might be buggy, and “issues during operation can occur which can generate hardware or software damage.” In the unlikely event of damage to your printer, Bambu Lab will assist with resolving it.
If you are still interested, you can sign up using this link: https://bbl3d.cc/s/cio31
They also announced that a new firmware is being prepared for the X1/X1C, but the signup is now closed. So be prepared for some new firmwares soon!