Sony isn’t giving up. Although sales of its dedicated e-readers have lagged, today the company announced the launch of its first two Sony Tablet devices. The Android-powered Sony Tablet S is expected to be in stores by mid-September with prices starting at $499 and the Sony Tablet P will be out later this year.

Tablet S is the larger of the two, having a 9.4-inch touchscreen display and weighing in at 1.33 lbs.The device is priced at $499 (16GB) and $599 (32GB). The device will ship with Android 3.1, aka Honeycomb, the Android OS optimized for tablets. The dual-screen Tablet P--with two 5.5-inch screens that can be folded into a larger format--is aimed at the mobile communications market. Both devices come with access to a full suite of Sony entertainment services, including its Reader Store, and as part of the launch, customers will receive a free e-book download.