There is a major problem with feats in 5e - and that is that because they can all without exception be taken at level 4 none of them can give abilities that would be out of line for a level 4 character.
This playtest explicitly talks about level 1 feats - which are not level 4 feats and are entirely appropriate for a level 1 character. They aren't +2 to a primary ability score or Great Weapon Fighter. And they aren't intended to be; they are intended for level 1 characters.
This is IMO an improvement - a way that you can have all characters starting out with one feat while not having all characters able to start with e.g. Polearm Master while at the same time not removing PAM from the game.