"Windows XP is a dead product"
Is it? Not in what MS calls the embedded market, it isn't.
The end of support for Windows XP SP2 (embedded variant) was earlier this year.
As far as I can tell, no end of service life has yet been announced for XP SP3 (embedded variant), unless you can translate
"Support ends 24 months after the next service pack releases or at the end of the product's support lifecycle, whichever comes first. For more information, please see the service pack policy at http://support.microsoft.com/lifecycle/#ServicePackSupport ."
into an End of Service Life date.
Not suggesting anybody actually design around, or use, XP Embedded, just pointing out that whatever Mainstream MS and their dependents may want you to believe, XP lives on, and on, and on...