Of Microsoft, Xboxs and t-shirts

Received this mailer in my spam box. Read it immediately, as Ballmer is in India and all over the news – perhaps I’d see something I’d missed out.
Problems that I had when I read the body copy:
Is it Xboxs or Xboxes?
According to Microsoft: Xboxes.
Is it t-shirt or T-Shirt?
According to anyone on earth except those involved in creating this piece of communication, T-Shirt is the only acceptable answer.
No one ought to know the plural of Xbox more authoritatively than Microsoft.
And you can’t get more American than T-Shirts and Microsoft.