Yes, they turned row 12 into a business row and pushed me back to 14. When I questioned how our seats got changed, gate agent asked, “oh, were you in Row 12?” and explained to me that they added this row to business class and moved us elsewhere. In full disclosure,, there were two of us… had selected/confirmed 12C and !2D and were moved to 14B and 14C. I noticed it when trying to check in. This was 3 days ago.
Fearing the same thing on return flight, I preemptively changed seats from Row 7 together to Row 12 apart. They ended up adding Row 7 to business, with economy starting in Row 8. I don’t like this game.