FIA holds constructive discussions with stakeholders on future direction of Formula 1 technology at key meeting in Bahrain

While less than 2 weeks ago we had Nikolas Tombazis (FIA head of single seater racing) saying:

“That is a fact. We would like them to be cheaper, and that's why the president made the comments about the V10 engine in ‘28 and so on.
“That's something we are evaluating, or for '29 or whatever, with the PU manufacturers. We are discussing openly with them the best direction for the sport.”
Tombazis went on to explain how the talks over moving to V10s for 2028 or 2029 had then opened up a second debate about what to do with the new rules coming in for 2026.

https://www.the-race.com/formula-1/f1-discussing-return-to-v10-engines-as-early-as-2028/