Does Android 4.0 support WPA2 Enterprise?
I've just checked on my Galaxy Nexus, and yes there's an option for WPA Enterpise (802.1x EAP) with EAP methods:


PEAP
TLS
TTLS


and Phase-2 authentication types:


None
PAP
MSCHAP
MSCHAPv2
GTC


You can use an identity with a passphrase, or certificates

While I am running a custom ROM, I'm almost 100% positive this is in stock, as I could do the same on my Nexus One running 2.3