Gladius Legis
Legend
Mearls said to reskin a Sun Soul, but didn't explicitly say there weren't going to be any changes. And in the same tweet he even admitted that ki costs for the 4E Monk are too much.Nope: somebody asked Mearls on Twitter if any changes were planned for the Four Elements Monk, and Mearls suggested they play the Sun Soul as no changes were forthcoming.
The Errata that Crawford mentioned seem to have to do with followers and animals that are befriended, not any class features.