Photos of a sexy slider with a touchscreen have turned up as well as some tentative specs. If the distinctive form factor doesn't get you, perhaps the camera will. The Samsung S8300 packs 8MP of resolution as well as face detection and image stabilization, on top of many other imaging hash marks. No word on the optics, but the cam might me the jewel of this crown.
Reposted below are some pics from Daily Mobile, via GSM Arena. They're saying March. As you can see, the screen is huge. And the OS is Samsung's stand-alone TouchWiz. Preliminary specs can be found at phoneArena.com.