Shhh...even if the next Walkman to come out, it wouldn’t come until next year. Sony usually announce stuff at IFA or CES, but there has been 0 leaks so far even from CES...I doubt IFA will have any. If, anything at all, it would likely be the end of this year and going on the next year for global release. There has been a typical delays of 3-6 months from announcing to producing and shipping worldwide
I would say that you are safe for at least another 6-12 months period. Now, that could be a long time....who knows what happen tomorrow
I still swing a wild guess here, even if there are...it wouldn’t be cheaper than WM1Z. Seeing that WM1Z is Signature series and Sony lacks an Open-back full-size headphones, then I think that next one would be that open back, just to complete the Signature series. So then, after the completion of the signature series, there would Unlikely be another signature series for a long while.
you can expect NW-2A, and NW-3A....etc...whatever many generation until the next “signature series arrive”. How long did it take Sony to release another Android-based Walkman ? Zx2 and then Zx500 ? That had been like 5 years isn’t it ? Considering this windows for another Walkman WM2A or WM2Z are going to be 2023.
just guessing