A leaked Windows Phone roadmap has Windows Phone Tango coming in the second quarter of 2012, followed by Windows Phone Apollo in the fourth quarter of 2012.

We’ve been talking about Tango for a while now. The OS update is thought to support lower-end hardware, so WP could be used on phones in developing countries. The update is also expected to add support for LTE, allowing for Windows Phone handsets to run on the faster data networks here in the U.S.

The second update, Apollo, is expected to bring support for dual-core processors and higher-resolution displays – the types of things we see now in high-end Android handsets.

We’re expecting to see quite a few new Windows Phone handsets pop up at CES next month, particularly some new phones from Nokia who partnered with Microsoft to make WP handsets earlier this year. In order to carriers to jump on board with Windows Phone, the phones are going to have to start supporting LTE – it’s likely we’ll see at least mention of Tango at CES 2012 in January, and if the roadmap is correct, a launch of Tango handsets in the U.S. in the second quarter of 2012.

What do you think? Are any of you excited about the newest versions of Windows Phone?

[via MobileSyrup]