According to msmobiles they have heard from a reliable source that there is no Samsung Omnia HD smartphone powered by Windows Mobile and that the Samsung Omnia HD will only be released under the Symbian OS.
Also the apparent reason for the Samsung Omnia HD not using Windows is because of Microsoft was too late with their next version of the Windows Mobile OS.
Furthermore the Samsung Omnia HD is not limited to running 2 OS’s and that an Google Android based Samsung Omnia is on its way. So this basically crushes the hope that the Samsung Omnia HD will run Windows Mobile that is of course if the reliable source is as reliable as they believe.
Source — msmobiles