Likely to happen, since PHB is the most widely used of the class books (simply because it is the base of the game and the best-selling of all of the books).
Cheers
Yep. Time and again, the options in the Player's Handbook will usually win out over the options found elsewhere (subclasses, races, feats, spells...usually the winner comes from the PHB. There are a few possible reasons for this:
Options in the PHB are older, and therefore, more people have seen them, and more people have had more chances to play them. The theory being that since thre are more fond memories of playing a College of Lore bard than there are for a College of Spirits bard, the Lore Bard won.
And for better or worse, options in the PHB are considered the "default, this is always allowed" for most D&D players, since everyone playing any game of D&D needs at least one copy of that book. Unlike stuff in other books, like Artificers and Warforged and the Elven Accuracy feat--those things are perceived as "not default, ask your DM first" because those books are optional.
I believe it's that last one that makes people campaign so hard for/against certain options being included in whatever new edition of D&D is coming up. "
You can't include X in the Player's Handbook! If you do, everyone will think that X belongs in D&D!!" or "
If you don't include X in the Player's Handbook, nobody will let me use it!"