Looks like there’s a whole slew of new discounts and free events up at the Metro Discounts Page. Including a free CANON show on Friday in Union Station. And discounts on local festivals, like the the Feast of San Gennaro at the end of the month. Metro also encourages you to take the buses to the concerts at MacArthur Park on weekend (link goes to calendar, also free, so no additional discounts can be offered)
Most of the stuff is small or more hassle than it’s worth – but you can still subscribe via email for new updates from the Metro Discounts Page.