HTC is entering the Windows Phone 7 arena with a bang, offering 5 new handsets, right at the offset. Which is surprising, as portrayed in the words HTC’s product manager for Asia Pacific, Alex Liu, “Five new smartphones… we’ve never done this before.” So let’s cut to the chase and see what’s in the offing.

HTC 7 Surround

The HTC 7 Surround has a 3.8-inch touchscreen and a slide-out speaker with integrated Dolby Mobile and SRS WOW HD technology for hi-fi sound. The speaker-board slide out is very much similar to a keypad slideout. The Surround also has a stand that folds-out in order to let users set it up and watch mobile TV or videos on the handset. The HTC 7 Surround will only be available in the U.S., through AT&T, and in Canada, through Telus.

HTC 7 Mozart

Featuring a 3.7-inch touchscreen and an 8-megapixel camera with flash. The Mozart also has Dolby Mobile audio and SRS WOW HD make up for some serious sound capabilities. The HTC 7 Mozart will be available in Europe, from Orange and T-Mobile, and in Asia from operators in Australia, New Zealand, Hong Kong, Malaysia, Singapore and Taiwan.

HTC Trophy

The HTC Trophy sports a 3.8-inch WVGA touchscreen and is made for gamers, specially since it also features Xbox Live. It features a 1GHz Qualcomm Snapdragon processor and has SRS WOW HD for virtual surround sound. It is pretty similar to HTC’s Desire smartphone in shape. The Trophy will be available only from Vodafone in Europe, Australia and New Zealand, and from M1 in Singapore.

HTC HD7

The HTC HD7, thinner than the Windows-mobile HD 2, is by far the largest of the new HTC 7 smartphones, with a 4.3-inch touchscreen – very much in the league of another HTC offering (for Android) the Desire HD. It features a 5-megapixel camera and one part of the back of the camera acts as a stand in case a user wants to place the phone down for Xbox Live, or for watching videos or mobile TV on it. The HD7 will be available in the U.S. only from T-Mobile, from Bouygues Telecom in France and from Telefónica elsewhere in Europe. In Asia, it will be available from operators in Australia, New Zealand, Hong Kong, Malaysia, Singapore and Taiwan.

The HTC 7 Pro

The HTC 7 Pro has a slide-out full QWERTY keyboard. Productivity features for business users include mobile Office software and the ability to manage Outlook e-mail. The Pro will only be available in the U.S. and only from Spring, in the first half of next year.