Yes they added Spotify. They didn't indicate new sound improvements I can recall. Maybe the app is more reliable now (both were updated). So far so good anyhoo.
New Sony Firmware For HAPZ1ES Player
Sony has a network update available (today) for the HAPZ1ES server/player. It upgrades the firmware and adds new features. You also must update your remote software on your iPad or Tablet. It all took less than 5 minutes. Seems to be working fine, so far.