You may not have caught the announcement, but it seems that D&D products will no longer use the term 'race' to distinguish between PC, er, races. They'll use the word 'species' instead.
The first thing to say about this is that it indicates the difficult position in which companies like Wizards of the Coast find themselves. On the one hand, you would have a hard time making a coherent case that the way the word 'race' has been hitherto used in D&D is racist. This is because it has in fact been used in what would, a mere 5 years ago, have been understood to be an anti-racist way (before the meaning of that term changed): there was an orc race, an elf race, a dwarf race, and so on, and a human race.
In other words, all human beings, regardless of skin colour, are part of the same family, a 'brotherhood/sisterhood of man/woman' if you will, and distinctions between them should not be materially relevant. This is how people brought up in the 80s and 90s were raised to think about things, especially in the context of the SF/fantasy genres, in which the generally unstated emphasis on such matters was on presenting humans as a single group vis-a-vis aliens, monsters, etc. So while Wizards mights say that '"race" is a problematic term that has had prejudiced links between real world people and the fantasy peoples of D&D worlds' it is being either disingenuous or not thinking about things very hard - there is no 'prejudiced link' at all between real world people and the fantasy peoples of D&D worlds. The truth is almost the exact opposite: 'race' in D&D has always been used to (tacitly) eliminate prejudice between real world people by putting them all in the same basket. (Unless you happen to be an orc or tiefling or something, I suppose.)
Yet on the other hand, there are people who don't like the use of the word and are vocal about it. And once you start setting out an argument against them, as I have just done, you undergo a strange transformation from somebody who really didn't particularly care whether the word 'race' is used or not, to somebody who does, and who therefore becomes tainted by their defence of a thing which others consider to be racist. The accusation immediately becomes, "Why do you care? Why does it mean so much to you that D&D continue to use the word 'race'?" And then suddenly you are treading turbulent waters.
So I get why Wizards of the Coast made the decision they did and why they didn't think it a good idea to defend the history of D&D, even if I personally find it a bit insulting (I know it's a bit unfashionable to say this, but I am not a racist and I resent the implication that because I have been using the word 'race' all these years in D&D games I have been somehow perpetuting prejudice). The truth is it doesn't matter whether the word 'race' is used, all things considered, so it's best to just bite one's lip and go with something else. Species is a uniquely bad choice in my view, because 'species' is a biological, rationalist term that is very out of place in a fantasy setting. But I understand the reasoning.