I called Toyota dealer service center near me. Gave them my VIN and they said I already had my airbags replaced years ago. I have a 2004 Toyota Matrix. So there's nothing new? Maybe catching the last remaining ones that did not get serviced?
I had a vehicle that was recalled once for the driver side airbag, and then later called back for a recall on the passenger side airbag. IIRC some cars early on were even recalled for the same inflator twice when it was found that the replacement inflator had issues.
There's all kinds of details in the weeds here.