On the eve of Apple's big media event, ABC News on Monday posted a teaser spot for an exclusive report covering what the broadcaster calls a "historic announcement."

Details are scarce, but it appears ABC World News Tonight anchor David Muir has been granted inside access to Apple's event, which is expected to include the debut of new iPhone models and possibly an "iWatch" wearable device with mobile payments support.

"Tomorrow Apple will make a groundbreaking announcement - and ABC's David Muir will be the only anchor with exclusive access as it happens," ABC writes on its webpage.

As seen in the short clip above, Apple CEO Tim Cook is shown chatting with Muir, though the footage was taken from a previous broadcast filmed during the Mac's 30th anniversary.