Here now is the most offensive paragraph of the new in the 5th edition D&D Basic PDF:
Page 67 of the PDF under the heading of Long Rest, 2nd paragraph:
"At the End of a long rest, a character regains all lost hit points. The character also regains spent Hit Dice, up to a number of dice equal to half of a character's total number of them. For example, if a character had eight Hit dice, he or she can regain four spent Hit Dice upon finishing a long rest."
That is really offensive to my old school RPG playing mentality.
Hit Points are recovered after a long rest (sleeping for the night has to be identified as a long rest for some baffling reason). ALL Hit Points are recovered after a long rest....argghhhh....so no matter how unlucky and how beat up a character is they bounce back to 100% if they can go sleep for the night somewhere. D&D 5th edition characters are all heroes in really bad action movies as per the Basic rules.
I also have no clue at all what they are talking about in regards to regaining Hit Dice beyond spending hit dice that I noticed was to heal quicker after a short rest mentioned a couple paragraphs above the offensive lines noted above. I'm guessing there might be more about this idea in other 5th edition rules that didn't make the cut in the Basic PDF.