Some publishers aren’t waiting for an Apple tablet to surface before they launch their print editions as digital media -- Zinio has just hit the App Store with one such method.

Having already taken their content to the desktop, Zinio is now offering Zinio’s Magazine Reading iPhone App as a free download from the App Store. The app enables page sharing, enhanced article reading and beautiful, full-page portrait and landscape images. Best of all, your content is available to you whether you’re online or offline since it’s downloaded to your device.

If you’re already a Zinio subscriber, your library is automatically accessible with the company’s “smart-synch” function. Purchase your favorite new magazine issue or subscription right from your iPhone or iPod touch and they’ll be waiting for you when you return to your computer as well, without having to pay twice for them.

There are 12 titles currently available, including Automobile, Car & Driver, iPhone Life, Motor Trend, PC Magazine (available as a free sample), Popular Mechanics, Popular Science and Yoga Journal. Zinio promises more titles will be available in the near future.

Zinio’s Magazine Reading iPhone App is a free 2.1MB download for the iPhone or iPod touch and requires iPhone OS 2.2.1 or later.