It will come with similar design to its acclaimed original, but is touted to have the world’s first LTE/WCDMA/GSM radio combined commercially in a phone.
Other spec bumps include a 4.5" Super AMOLED Plus display, a 1.5GHz dual-core processor, and the usual swath of NFC, Wi-Fi, Bluetooth, 8MP camera with flash and a 1850mAh battery. This handset seems destined for AT&T at some point - LTE with a fallback on HSPA+ sounds pretty enticing.
Leaked news about it, though, codenamed as Samsung Celox, had its radio at 800MHz frequencies, not the 700MHz AT&T is occupying with its LTE, so it's probably going to Europe first, that's why it gets flaunted at IFA. We are most curious about what chipset Samsung is using here - Qualcomm is supplying the radios for Verizon's LTE handsets, and it does have a 1.5GHz dual-core chipset, but Samsung might have taken a different approach with its own Exynos silicon, like Motorola did with the DROID BIONIC and TI's OMAP chipset.