The Grand 2 has a 5.25-inch, 1,280x720-pixel display, a (slow by today's phablet standards) 1.2GHz quad-core processor, and an 8-megapixel main camera. Get the full run-down on the Galaxy Grand 2 on CNET.
The Z1 never made it to the US, so don't expect the Z2 to either. However, Sony gave the US the Z1S at CES this year, so we may see a version of the Z2 come to America.
The Nokia X won't wow most folks with its features, but it's a good fit for developing smartphone markets with its 4-inch screen with an 800x480-pixel resolution, 3-megapixel camera, a 1GZH dual-core Qualcomm Snapdragon processor, and Assisted GPS. It also costs just 89 euros.
The X+ is identical to the X, except it comes with more onboard storage and an SD card slot. The XL is slightly larger than the X and has a 5-megapixel camera. You can read more about all three phones on CNET.
We have even less details on the Q20, except that it will have a keyboard similar to the Q10. We'll have to wait until the second quarter of this year to get more information on the new phone.