According to IMDb, Gibson stated:
“My wife and I, our marriage ended three years ago and we’ve been separated ever since then. These things happen. It’s unfortunate, it’s sad, but you know she is an admirable woman – we still got kids together. We’re friends… Look, when it’s all said and done, I did a pretty good hatchet job on my marriage myself. I’m to blame. If you’re inclined to judge, put it here.”
Leno then asked about the pregnancy rumours, to which the Lethal Weapon responded: “This is true. We’re gonna have a child.”
It seems the Leno interview hasn’t aired yet, but we’ll post video as soon as it pops up.