D&D Beyond has uploaded a full preview of the Jabberwock from The Wild Beyond the Witchlight, with complete stat block and full breakdown on how to run the monster in a game.
Beware the Jabberwock! The Burbling Dragon Arrives in The Wild Beyond the Witchlight
Very interesting monster, especially with its Confusing Burble and regeneration. It looks rather tough for a CR 13 monster! It does, of course, have a vulnerability to vorpal swords, in homage to the original Lewis Carroll poem.
Beware the Jabberwock! The Burbling Dragon Arrives in The Wild Beyond the Witchlight
Very interesting monster, especially with its Confusing Burble and regeneration. It looks rather tough for a CR 13 monster! It does, of course, have a vulnerability to vorpal swords, in homage to the original Lewis Carroll poem.