Not Quite, Alignment still exists but it isn't as mechanically significant. The list of mechanics and abilities that care about alignment is fairly short, and the list of creatures that care is shorter.
Ah ok, makes sense. my days were in 3.5, I have read a lot about 5e, but never really got into it. Even today if I jump in a party here and there, usually it is 3.5.
Personally, I am betting that it will be completely removed in 6e.
It seems to me that WotC has recently set itself the goal of completely marginalizing alignment in order to be able to remove it without problems (at least for players).
I doubt they would otherwise forbid Larian to add an alignment-based system.
You can argue whether it is a good or bad decision, although personally I have never been a big fan of this mechanics
