HTC released three snappy new smartphones at Mobile World Congress in Barcelona. The company showed off the HTC Desire, the HTC Legend and the HTC HD Mini.

The HD Mini, a Windows Phone, represents an attempt to deliver the HTC HD2 in a more compact design. The phone utilizes HTC Sense, the company’s homegrown UI, and will be broadly available to customers across Europe and Asia beginning in April.

Meanwhile, HTC released two new Android devices, the HTC Legend and the HTC Desire, which boast an enhanced version of the company’s Sense UI, running on top of Android 2.1.

The company says it has provided further social media integration with a new application and widget called HTC Friend Stream. Friend Stream aggregates all updates from Facebook, Flickr, Twitter, and other popular sites into one continuous flow of information. HTC Friend Stream will also allow the organization of contacts into different groups. Enhancements to the email client and webs browser, along with a new “leap” thumbnail view of the seven page home screen have also been incorporated into the upgrade.

Both devices feature AMOLED HVGA touchscreens. The Desire uses the Qualcomm Snapdragon processor and is Adobe Flash 10.1 ready. Both devices will be available in Europe in the second quarter and in Asian markets after that. The company said it has no plans to bring either device to the U.S.