This week Sony Ericsson have officially announced the release of the Xperia X2 along with the handset which was previously known as Kiki. The Xperia X2 is the successor to the popular Windows Mobile Xperia X1. The X2 will also run Windows Mobile but the updated 6.5 version. Engadget were also able to preview the Xperia X2, which at the moment, Windows Mobile 6.5 isn’t finalised, so there’s a bit of lag in the UI. The Xperia X2 also features an upgraded camera coming it at 8.1 mega pixels. Release date is set for Q4 of 2009, so hopefully we should see the handset before Christmas. You can view the video by Engadget after the jump.

The other Xperia handset announced, is not the Xperia Rachael, aka X3, but rather the handset we formally knew as Kiki. The handset, well known specs are limited at the moment, we have known it will feature a “transparent screen”. Again we have a video showing this which you can view after the jump. The display is visible from both sides of the handset, but if it only displays during certain screens or can be turned off is currently unknown. Hopefully it can be turned off, or not on during certain screens, other wise text messages soon won’t be very private. The handset has been named Xperia Pureness and is due for release also in Q4, with November as the month the coming is aiming for.

Both handsets will launch in selected markets during Q4. No price is known as of yet.

News has been flying around lately about all the upcoming Xperia handsets from Sony Ericsson, but have you been keeping track? Here to help you out, is a quick review on the upcoming Xperia models, as well as the current Xperia X1.

The Xperia X1, currently on sale around the world is the first Windows Mobile handset from Sony Ericsson. The handset also features a touch screen and slide out QWERTY keyboard. Camera wise it features an impressive, yet slightly outdated 3.2 megapixel camera.

We’ve seen the photos of the upcoming Xperia X2 and now the blueprints of the device have been leaked onto the internet. Appearance is the

same as we’ve previously seen in the photos but with some noticeable features we hadn’t seen before. The top and bottom of the X2 both have grills which are supposedly the speaker grills. Other details are still currently unknown but, we’ll keep you updated.

If the previous pictures of the upcoming Xperia X2 from Sony Ericsson weren’t enough for you, on the Esato forums more pictures have been posted up. The pictures show the phone while closed, with the display on and in a different color. These shots see the Xperia X2 in silver, which make the handset look even better than the X1. But is the silver more sleek than the black model? I think so.