It's shaping up to be a wild day for HP: in addition to revamping its Envy laptops and announcing its first Ultrabook, the outfit went and refreshed the mid-range Pavilion dm4. While it has the same metal-heavy design that bowled us over in our review, it trades Altec Lansing audio for Beats and gains a subwoofer. Otherwise, its entry-level specs -- a Core i3 CPU, 6GB of RAM and a 640GB 5,400RPM hard drive -- closely match the starting config available today.
And, while the company was at it, HP also announced a red-and-
