Chef Gabriel DeLeon says October 3 is the target date for the opening of Mi Dia in Grapevine. DeLeon’s new menu is a combination of Tex-Mex, Mexican, and Santa Fe-style dishes. I peeked in a couple of weeks ago and, even under construction, the dining room looks lovely. DeLeon has been cooking around these parts for quite a while. He worked at his uncle’s restaurant Esparza’s in Grapevine before he opened La Margarita restaurant in Irving, Texas. Most recently, he was the driving force behind Masaryk, a modern Mexican kitchen and tequila lounge.