Danny has certainly pushed elegance forward with a theme which rebuilds it directly as a child of Bas' Bootstrap3 base theme.
I've done some work on making a child theme of Elegance which I hope will make it easier for people to build onto it. And once I'm back to work I hope to do some more work with it too.
I also heard someone from Pukunui (I think it was Shane, but could be wrong) at the iMoot confirming that Essential and Elegance would continue to be supported, although not by whom.
So, I think its fairly safe to say that the theme will be supported, although it would be good to have a single person (or at least named group) responsible for people to turn to.
Maybe in a week or so, as soon as I am able to, I'll have a word with Danny, Julian and anyone else interested and we can come up with a workable solution for a named maintainer for the project. I know in that post Gareth referenced above Danny has said he doesn't want to 'own' the project but maybe we can come up with something a bit more organised between us than just generic forum support (which will carry on anyway!)