According to Beyoncé's dad, Mathew Knowles, a reunion isn't currently being planned due to various reasons.
Popcrush reports that Knowles believes a tour is still impossible to lack of desire from the three women. Apparently all of them are happy working with their solo careers, and none of them have expressively said they want a reunion to happen.
Knowles continues on with saying that even if a reunion was being planned, it would take a long time for it to happen. It's not just about making a tour happen when it fits everyone, but they must also decide what songs to perform. The tour's set list would have to include hit songs from the three members' solo careers along with Destiny's Child's hit songs.