NEW YORK — Apple is cutting prices on two iPad models and introducing red iPhones, but the company held back on updating its higher-end iPad Pro tablets.

A much-speculated 10.5-inch iPad Pro didn’t materialize, nor did new versions of existing sizes in the Pro lineup, which is aimed at businesses and creative professionals.

The new devices are mostly refreshes of existing models. Apple unveiled them through press releases Tuesday rather than a staged event, as it typically does for bigger product releases.

The iPad updates come as the tablet market continues to decline, after a few years of rapid growth. According to IDC, tablet shipments fell 20 percent to 53 million worldwide in the final three months of 2016, compared with the same period in 2015.

THE NEW LINEUP

The iPad Air 2 is replaced by a new model simply called the iPad. It retains a 9.7-inch screen, but gains a little weight and thickness. The display is brighter and the processor faster. Its price starts at $329 for 32 gigabytes of storage, down from $399. The standard-size iPad is now cheaper than the smaller Mini model.

The 7.9-inch iPad Mini 4 now comes with 128 gigabytes of storage starting at $399, rather than $499 before. Apple is eliminating the 32-gigabyte model, which used to sell for $399. Nothing else is changing.

Apple is also releasing a red edition of the iPhone 7 and 7 Plus; for each phone sold, Apple is donating an unspecified amount to HIV and AIDS programs. And Apple is doubling the storage on the smaller iPhone SE while keeping the $399 starting price.