I believe Dr Mohler is on his summer break. I haven't listened to his latest briefing, but, I believe that if he is currently on his break, he would have announced it on his latest podcast. He also would've announced the date of which The Briefing would commence again (in the latest podcast).
"We’ll be watching the world with you during the month of July, and we’ll be back with a 2016–2017 season of The Briefing on Monday, August 1, 2016." - Dr Al Mohler
I think he generally takes off at least a month in the Summer. Some who listen regularly complain of withdrawal symptoms! I like listening to it but haven't ever found the time to make it part of my everyday routine.
His longer podcast, Thinking in Public, is also well worth listening to. He does one every month or two. It is usually an interview with the author of a recent book.
It's funny. I thought the thread was a celebration that the season has re-started. I think I'm on my 4th year of listening to The Briefing. I really appreciate it. I nearly forgot it was back on today until I saw it in my feed.
Even though it is pretty basic, I really should listen to it instead of whatever is on talk radio when I'm in the car. And it's a lot less time consuming than reading endless blogs and social media.