Developers can now build or extend their own VPN solutions on the platform using a new VPN API and underlying secure credential storage. With user permission, applications can configure addresses and routing rules, process outgoing and incoming packets, and establish secure tunnels to a remote server. Enterprises can also take advantage of a standard VPN client built into the platform that provides access to L2TP and IPSec protocols. http://developer.android.com/sdk/android-4.0-highlights.html
Does that mean we'll get a Cisco VPN client? That will be a killer app.