Dierks Bentley's wife, Cassidy Black, is pregnant with the couple's third child, and at a fan club event over the weekend as part of the CMA Music Festival, the 'Bourbon in Kentucky' singer let his biggest fans become the first ones to learn the sex of the impending addition to his family.

According to Country Music Is Love, the couple are expecting their first son. They already have two daughters, four-year-old Evalyn Day and two-year-old Jordan Catherine. They have been married since 2005.

Bentley revealed the news to the 350 fans in attendance at his ninth annual Last Call Ball at the Belcourt Theater in Nashville on Sunday (June 9). He also performed an acoustic set that included songs from his upcoming album 'Riser,' which is due in October.

That ought to be near the time the couple welcome their new son. Taste of Country reports that when they announced the pregnancy in April, it was still to soon to determine the sex of the baby, and since that can be determined after 17-18 weeks of pregnancy, that means the youngest Bentley should be due in the fall.