Samsung, in partnership with China Telecom, has just announced the SCH-W999, successor to the W899. The W999 is a formidable (read: huge) flip phone, and comes with two of everything – two 3.5" S-AMOLED displays at 480x800, a 1.2GHz dual-core Qualcomm MSM8660 processor, and 2 SIM slots.
Besides its powerful processor and dual displays, the W999 offers a 5MP rear shooter, dual-mode connectivity, and penta-band support.
If you can't tell from the photo above, the W999 is a hefty device, at least in terms of width and height. If you're already thinking about picking one up, you'll have to wait until some time in 2012. It's also worth mentioning that its predecessor's starting price was about $1400, so there's a good chance the W999 will be a rather expensive investment.
In closing, a word of advice from Reddit user goshdarnrootintootin: "You want to watch out for those two-faced phones. They'll flip on you for no reason."