Engadget received internal renders from a source inside HP. These systems will be available in 7" (Opal) and 9" (Topaz) versions, both models will be equipped with an unnamed 1.2GHz processor. The official announcement is expected at a press event on February 9th.
We're told that units will start to arrive at Palm HQ in June as production ramps up for launch later this year -- a timeline backed up by an internal marketing slide we received that lists WiFi-only, AT&T 3G, and Verizon LTE versions of the Opal arriving in September 2011, and on AT&T LTE in July 2012. The slide also indicates the Opal will have a particular e-reading focus, which makes sense for a 7-inch device, and there's a mention of "premium audio," which nicely reinforces our speaker hypothesis.