SAN FRANCISCO (AP) — Apple is expected to step up its efforts to boost recently slumping iPad sales with the unveiling of its latest tablet computer at an Oct. 16 event.

The showcase also is expected to feature an update to the operating system for its Mac computers and the possible release of a new digital payment service called Apple Pay. The company’s new iPhones released last month include a wireless chip equipped to make the payments, but the service isn’t available yet.