As others have pointed out, the 6.2 release is a tiny bug fix, and even 6.1 is a modest update since LT went open source.

The real story about Light Table since then is the growth of available plugins. Most look like early efforts, but the promise is there. There are early plugins for F#, Ruby, OCaml, Haskell, and others. There's even a plugin to play othello in the editor. https://github.com/eriksvedang/othello/