I guess the first Ace Comic Con in Glendale earlier this year was successful enough to warrant a second year. Ace Comic Con recently announced the hyper focused celebrity convention will be returning to Gila River Arena in Glendale, AZ on January 11-13, 2019. No word on guests appearing but if you look at their previous couple of shots, many of the guests do more than one show so you’ll have an idea of potential guests. (Thanks to @SerenityInSD for the heads up on the announcement).
For a look at last year’s Ace Comic Con in Glendale, you can read about it in my article right here.