There was other hardware in the works beyond the HP webOS TouchPad Go.

WorldWide Tech & Science. Francisco De Jesùs.

There was other hardware in the works beyond the HP webOS TouchPad Go. 

Josondesign posted a large article "webOS on the Verge" where he adds his own information and experience he had when worked at Palm/HP, and  on a part of the article he posted these tidbits:

Other tidbits:

• There was other hardware in the works beyond the TouchPad Go. I saw prototypes of many products including a transforming tablet / netbook combo with an ingenious sliding hinge and super thin keyboard. I really hope someone makes it one day.

• On "competing for #3" Yes it would have cost us billions of dollars over a bunch of years, but I think we would have been #2, not #3. It has been nearly a year since the TouchPad launched and Android tablets are still failures. I think there is a lesson in here for us: without a carrier and contract pushing them, Android devices don't sell themselves.

• WebKit: Using WebKit for the GUI was pure genius. Forking Webkit so you couldn't take advantage of community improvements was pure stupidity.

Source: Josondesign