Though BYOD is talk of town but I still feel that it will take time for people to adopt this as its still hard for people to agree to bring there own device into any MDM control and there is always fears behind this over access of personal data. Virtualization concept which is claimed to be introduced by SAP in 2013 may bring some relief but Rapidly changing technology may not allow MDM vendors to be in peace and BYOD will remain a challenge for organizations in 2013 as well.So COPE (Corporate owned, personally enabled) will be easy way forward but definitely will lack user demand for diversity of devices but definitely COPE can be secure alternative for coorporates.
Details on COPE
http://www.wired.com/insights/2012/12/cope-the-secure-alternative-to-byod/