Nokia didn't put up much of a show at the MWC - they showed MeeGo and that was it. Yet, rumors of the first Symbian^3 devices are already floating around though - like the Nokia X10 rumor. A spy-style video promises a QWERTY keyboard, an AMOLED screen and more for this purported third entry into the Xseries.
The first Symbian^3 device from Nokia that we heard of was the Nokia N8, the rumored 12MP cameraphone with 720p video powers. It's quite possible that the Nokia N87 and the N8 will turn out to be the same thing, but the Nokia X10 might beat them to it and be the first Symbian^3 powered phone.
The Nokia 5800 XpressMusic, the grand daddy of the Nokia X10 was the phone chosen to introduce the new touch-enabled branch of Symbian. But if the video is to be believed, the Nokia X10 packs a lot more impressive features than the 5800.
First off, it's a side-sliding QWERTY keyboard design (a la Nokia 5730 XpressMusic), it will be powered by a Cortex A8 CPU at 600MHz and have 256MB of RAM, with 16GB or 32GB of internal memory. There's nothing about a microSD card slot though (the Nokia X6 doesn't have one).
The screen on the Nokia X10 is said to be a 3.2" AMOLED capacitive touchscreen (but nothing on the resolution). The rest of the revealed specs are a 5MP camera with LED flash and 3G with HSDPA/HSUPA, Wi-Fi, GPS and an accelerometer for UI auto-rotation.
Source (site in German)