When is the next def leppord concert?

As an AI language model, I do not have access to real-time information or the ability to track upcoming events. Concert dates and schedules can change frequently and vary depending on the location and availability of the artist.

To obtain the most up-to-date and accurate information about Def Leppard's upcoming concerts, I recommend checking official sources such as the band's official website, social media channels, or reputable ticketing platforms. These sources will provide the latest tour schedules, ticket availability, and any additional information related to their upcoming performances.