As the title asks - is any official content available that brings the Eberron concept of Living Spells to 5th Edition?
I'm okay with Unearthed Arcana or other articles, as long as it's published officially.
Living spells are creatures; the magic of a spell cast that has gained a mind of its own. They used to be available in the 3.5e and 4e versions of Eberron.
I know there's no official Eberron setting yet, but parts of it have been converted in UA articles and since the Living Spells were (IMHO) quite iconic of the setting, I'm hoping they've also been made available.