The clue may not be really that obvious, but while browsing through the selection of featured webOS apps and games, the Opal has been spotted by some on the list of compatible devices. It seems like HP has already taken notice and has removed the tablet from the list, yet screenshots of the goof up are already circulating the web.
heard about the HP Opal was in January, but since then, the HP TouchPad has been getting all the attention leaving its rumored 7-inch sibling in the shadows. Now we finally have a clue leading us to believe that the smaller-sized webOS tablet has not been scrapped even though news about it has been scarce. If the rumors are to be believed, the HP Opal, or whatever its official name turns out to be, should hit the shelves at some time in September of this year.
source: HP via PreCentral