I'm waiting for my XE6 license and was looking at the spec sheet and noticed XP is not in list of deployed OS'

I'm waiting for my XE6 license and was looking at the spec sheet and noticed XP is not in list of deployed OS'
Does anyone know if this is just left out for marketing purposes or has the plumbing been pulled for XP?
I still need to support XP SP3 desktops for another year or so.