The official announcement from Microsoft confirms that Windows Phone 7 is available today in some international markets. This includes the UK.

If you head here there are three videos posted yesterday namely : Video Press Conference, Windows Phone 7 Demo and Xbox LIVE on Windows Phone. To view these videos you will need to use Microsoft Silverlight.

The official launch of Windows Phone 7 was complemented by the Windows Phone 7 smartphones announced recently. These are the HTC 7 Trophy, HTC 7 HD, HTC 7 Mozart, Samsung Omnia 7 and the LG Optimus 7. A further smartphone, the Dell Venue Pro is not yet available but will be coming before Xmas.

3G is currently undertaking its review of the HTC HD7 and this should be posted soon.

Looking at the position with sales and who is selling what, this is confirmed below :

HTC 7 Trophy / Vodafone

HTC 7 HD / O2 /

HTC 7 Mozart / Orange

Samsung Omnia 7 / Orange / Three

LG Optimus 7 / Vodafone

Dell Venue Pro

We've got the official launch, we've got some Windows Phone 7 smartphones and we wait to hear how sales do. More from 3G once we get some indiications of sales volumes.