This week Apple deployed iOS14.5 - a relatively standard operation for Apple when it comes to its update schedule for iPhones. But this one had some big ramifications for the media and marketing industry. The new operating system included Apple’s App Tracking Transparency updates that significantly change the relationship between users and the apps they use. The Mumbrellacast team dives into the implications for customers, as well as for advertisers.

The game of musical chairs at WPP and GroupM continued this week, when news broke that MediaCom AUNZ CEO Willie Pang is stepping away from the agency to take a broader role across GroupM as managing director of GroupM services. Pang’s appointment follows the March departure of GroupM’s local CEO Mark Lollback, and with the search for the CEO is still underway, what's WWP's next move likely to be?

Plus, Sunrise Weatherman Sam Mac jones a rare club of repeat guests on the Mumbrellacast, as he chats with Tim Burrowes to chat about his new book Accidental Weatherman. Mac talks about why his book "isn't an autobiography," in a chat that also covers what he loves about the magic of live television and his experiences interacting with viewers on social media.