Ratskinner
Adventurer
Actually no it didn't. They have always been a bit abstract but not as bad as presented now. I have played D&D since the basic boxset and I don't remember hit points ever being like this.
I think they are exactly as abstract as they have always been, in fact, a good deal less so. Now they give you guidelines for how "beat up" you are vs. just running out of gas. Before, you had to wait until you were healed to find out, if then. They are not any less abstract than before...however, they seem to be defined as representing less physical damage than before. That is, they are more towards the stamina and ability end of the spectrum. The idea that "the only hit which does a big amount of physical injury is the one that takes you below 0HP" has been a long-standing interpretation.
I like the current playtest system as it seems imminently modifiable. Just reading it gave me several ideas for how to tweak it in different directions.