Pacific Cycles announced the Birdy 4 and an e-Birdy with a Bosch mid motor (probably a Performance line SX) that should be shown at the Eurobike 2025 that started today.

Pacific cycles is already selling the special series P45 (which is derived from the special series P40 commercialized 5 years ago) and the Gen 4 Birdy should use the same frame as this p45.

I guess that its the reason why this announcement of Riese & Müller was made now.

Up to now, there was an agreement between Riese & Müller who developed the 3 first generations of Birdy and Pacific Cycles who is manufacturing the Birdy frame that Riese & Müller was selling the Birdy under its name in Europe while Pacific Cycles was selling it in Asia.
I think that this agreement ended now and that from now on, Pacific Cycles is free to do what they are willing to do with the Birdy including introducing a new model and not manufacturing frames for Riese & Müller anymore. The P40 and P45 like the 3 generations of titanium Birdy are Pacific Cycles own developments.

Riese & Müller is indeed since several years an high end ebike manufacturer they have their own frame manufacturing in Portugal (the Birdy frame was an exception), they have a big network of resellers selling ebikes which is not interested in selling a folding bike. Selling the Birdy was just a remain of the pas when Riese & Müller was a small startup created by two young guys.

While for Pacific Cycles the Birdy is their most famous bike type and a very important bike.

The fact that Pacific Cycles is introducing the gen 4 Birdy and e-Birdy at the Eurobike means for me that they are willing to sell them in Europe.

BTW, Pacific Cycles is also moving to ebikes, they have now several new models based on the Bosch Performance Line SX lightweight mid motor.