I did post in the Speedbird Cafe forum the other week about this - but was rather jumped on questioning why I didn’t buy supplies at the airport - when I was simply pointing it out. wouldn’t be surprised if that’s where the PYOK article came from.
Anyhow yes a trial is underway on Larnaca and Budapest services, offering half a cup of water as the service. I did ask to feedback to the crew via the iPad that I wasn’t impressed with the move, or lack of notice on a 5hr Larnaca flight - but was told that wasn’t possible for some reason.
Crew generally weren’t looking forward to a formal roll out - which suggests something coming down the track. US services were also subject to a trial the other month - on wine poured from full bottles as opposed to mini bottles, not sure what’s happened there.