When will the new version come out, and what new improvements will there be?
New Widgets: https://vk.com/dev/widgets_for_sites
New Widget - Audio Playlist - https://vk.com/dev/Playlist
VK.com now legally audio streaming service, like Spotify or Deezer
Will there be support AddThis?
The next release is in the works. We're not planning an major new VK support for this release though. We're hoping to add some of the new widgets for VK in early 2018.