The interview linked says most of the same things I reiterated about each of the books, and also, Mike Mearls' twitter account also contains lots of upcoming tidbits. But I don't know if they were managed that badly, or we are all just frothing at the chomp...
For Basic D&D, the relevant L&L:
http://www.wizards.com/DnD/Article.aspx?x=dnd/4ll/20140527
Not sure if you saw that L&L, but it more or less jives up with what I stated earlier. I think many people saw the name "D&D Basic" and thought "Oh, the game must be like the original D&D", rather than going "oh, this is the 5E Rules Cyclopedia." It says what they feel is the "essential" (read; most liked by players overall I suspect and simplest) subclass versions of each of those four classes, not the old school version.
Looking for the article where it talks about the DMG being able to create any earlier edition of D&D.