IPSec (even via IKEv1) is becoming increasingly useless on public networks because it's often blocked at the router level.
OpenVPN (especially on TCP port 443) is much less likely to be blocked.
VPN providers can integrate OpenVPN implementations in their apps after vetting by Apple. Some competitors (e.g. Private Internet Access) have offered this for months. In fact it's the default protocol now for some VPN apps on iOS (you can also choose between UDP or TCP and various ports).
I probably won't renew my Freedome license in December if this isn't going to be available.