no he is not right
A LITTLE SPOILERS NOT TOO BAD
in the first 15 minutes of gameplay that was shown link almost "falls" off then he is stumbling on the edge clearly afraid to fall then "someone" pushes him and tells him to whistle cause link doesnt know what to do then his bird comes i think that that is proof enouph that that is the first time he meets his bird
To be honest...if they did not let you name the bird, then we will see a change to the typical creature formula used by Nintendo. I am pretty sure that in every other game you get to name 'Epona' whatever you wish, with the exception of Ocarina of Time and Majora's Mask...unless of course my memory fails me.