Does Heavy Armor reduce Dexterity Saves?

@JeremyECrawford Does Heavy Armor reduce Dex Saves or Dex skill other than stealth?

— Matt Bell (@KilgraveMatt) September 15, 2015

If you have proficiency with it, heavy armor doesn't affect Dex. saves or ability checks, other than Stealth. #DnD https://t.co/xbmrlfbqhL

— Jeremy Crawford (@JeremyECrawford) September 15, 2015