Virgin Mobile USA just officially announced the LG Optimus Slider and HTC Wildfire S, their latest Android handsets coming to Best Buy at the end of October.

We told you about a Best Buy leak a few days ago confirming the Optimus Slider’s specs, which is really just a refreshed version of the $99 Optimus V. The specs are largely unchanged from the V apart from the slide-out hardware QWERTY keyboard and Android 2.3. If you’re not familiar with that device, expect the Slider to sport a 3.2-inch color LCD touhcscreen, 3.2 megapixel main camera, WiFi/3G, and 4 hours battery life (3 days standby). You’ll be able to grab it on October 17 from Virgin, or on October 31st at Best Buy and RadioShack for $200. It will hit Target November 6, and November 13 in Sprint stores.

Also announced today is the HTC Wildfire S, the first HTC device on Virgin. The Wildfire S will comes with a 3.2-inch HVGA touchscreen display, 5 megapixel main camera with flash, 600MHz processor, 3G/WiFi, Android 2.3 and HTC Sense on top. The silver model will be available exclusively to Virgin customers (and Best Buy). You’ll be able to pick it up for $200 on October 23 through RadioShack and Best Buy. expand full story