Thanks for the Reply,
Actually we are configuring the Lync Online Hybrid and i heard there are some issues with Directory search Etc with Lync 2010 Edge, hence wanted to just install the Edge 2013 First and get the Hybrid configured so that i dont need to change the federation
from Lync 2010 Edge server to Lync 2013 edge lateron,
I am aware that we can configure the Lync Hybrid compatibility with Updated CU.
After configuring the hybrid we will move all the users to Lync Online and at last we will install Lync 2013 FE and move only the Ent Voice users from Lync 2010 FE to Lync 2013 FE.
Please let me know your View on this.