Although not new info, just a reminder that the Spanish government has extended its free travel (subject to buying a pass, refundable if used regularly) on Local and regional (MD/Avant) trains for the whole of 2023. In 2022 these were available to tourists, and I haven’t seen anything different yet. There is also a 50% pass available for Avant/AVE services, but I think I heard this is off the full price so early booking fares may still be cheaper if you PAYG, not using a pass.
So anybody planning trips to Spain may find local and MD trains crowded.
Also this may change the way you travel with a Global pass, since the Barcelona to Port Bou train is included in the scheme and Barcelona has many Rodalies services and I expect MD trains as well.
Info on the 2023 offers is still sparse, but the details of the 2022 scheme is available via the Renfe Cercanias app. They are called Abonos Gratuitos.
In 2022 you simply needed to register with Renfe and buy the pass, either in advance or at a station/ticket machine and then present the QR code at the gate. (Paper versions are supposedly available).