I think there's a problem with the Dell website today because I logged in through my employer's EPP page and they are not showing the XP model there either. For some reason, the listing for Mini 9 on the EPP log-in page says "Refresh page for current prices. If this message still displays after refresh, please call for current prices." Very strange! Hopefully the problem will be fixed soon.
Mini 9 (910): Cherry Red, N270, 2 GB RAM, 16 GB STEC SSD, XP Home
Mini 10v (1011): Passion Purple, N270, 1 GB RAM, 160 GB HDD, XP Home
Inspiron 11z (1110): Passion Purple, SU4100, 2 GB RAM, 250 GB HDD, Win7
Alienware M11x R1: Cosmic Black, SU7300, 4 GB RAM, 160 GB HDD, Win7
Latitude 2110: Blue Ribbon, N470, 2 GB RAM, 250 GB HDD, Touchscreen, Win7
Zino HD (400): True Blue, Athlon X2 3250e, 4 GB RAM, 500 GB HDD, Win7
Plus a few others not discussed here...