This will be a challenge for them. Even though they had good critical opinion of their last effort, and those who did use WebOS seemed to like it, they didn't sell that much, which is why they shut it down. For HP now they will have to overcome the perception that they already failed at this once, despite have actually had a reasonably decent product last time around. They're going to have to convince people that despite what happened last time, despite the competitors out there, and despite rejoining this fight when it's already so old, that they deserve a chance. That means doing something hardware and software wise that can really impress people. Not saying they can't do it, but it's going to be really tough.