In early July, DisplaySearch predicted that PC and notebook monitors would inevitably transition to 16:9 aspect ratios, with 16:9 monitors to be among the majority by 2010. Almost a month later, Dell has added a new 24" monitor to its lineup, and—you guessed it—the display has a 16:9 aspect ratio.
The Dell S2409W shows up along with the rest of the Dell's monitors in the Home & Home Office Accessories section, and it comes standard VGA, DVI, and HDMI display inputs. Where 16:10 24" offerings typically have 1920x1200 resolutions, however, the S2409W has the same 1920x1080 resolution you'll find in 1080p high-def TVs. In practice, that means you're getting a monitor with fewer vertical pixels for your money, even though Dell charges the same $379 for the S2409W as for its older 16:10 counterpart.
On the nitty-gritty side of things, the S2409W has a 5-ms response time, 300-cd/m² luminosity, 1000:1 contrast ratio, 160-degree horizontal and 170-degree vertical viewing angles, and an 85% color gamut. Judging by the price and specs, we'd wager the display uses a cheap TN panel, but Dell doesn't specify the S2409W's panel type.
Supposedly, 16:9 panels are more cost-effective to produce than the 16:10 ones common in computer monitors today. DisplaySearch said earlier this month that it expected panel makers themselves to push for a transition to 16:9.