The Acer DX900 got revealed at the MWC 2009 in February. Verdis Reviews just published a review of the Acer DX900 smartphone.
Quote from the review: "The mobile phone industry has been flooded with a huge array of Windows based smartphones which all seem to be variations on a theme and not hugely different from one another. With high profile companies leading the way, such as HTC, bringing in new features such as larger integrated touch screens, rivalling companies need to respond. In the past this was done with the addition of extra features that are supposed to maximise the user experience but in all truth for the last few years, many phones have been incredibly similar.
Acer hopes that the DX900 will be a sure fire hit but the amount of consumers who are actually looking for dual SIM functionality is likely to be a small minority. With this in mind, can Acer still produce a phone which warrants purchase using just a single SIM card?"
Read the full DX900 review on Verdis Reviews.