WWAN in X201s

[achat_2]

A simple question:

is this X201s WWAN upgradable or not?

ThinkPad X201s (5397-FEG)
i7-640LM(2.13GHz), 3GB RAM, 320GB 7200rpm HD, 12.1in 1440x900 LCD, Intel HD graphics, Intel 802.11agn wireless, Bluetooth, Modem, 1Gb Ethernet, UltraNav, Secure chip, X200 UltraBase+CDRW/DVDRW, Fingerprint reader, 9c Li-Ion, Win7 Pro 32

I have read somewhere the X201s lid has no antenna inside.
So the answer is no?

A.