HP may not have much going on when it comes to cellphones and tablets at the moment, but the company is hardly resting on its laurels. As if to prove it's still got a bit of fire in its corporate belly, it unleashed a total of eight new displays today (nine, if you count the updated HP rp5800 Retail System). The trio of digital signage models, including the 47-inch multitouch LD4720tm, probably aren't of much interest to you, but the four new ZR series
