Do I Really Have to Rewrite All My Code to Support CC 2014.1?

Hi All,

Up until now, all my customers were using CS5.5 or CS6. My Extensions were written in ActionScript and developed in Extension Builder 2.1.

Am I to understand that in order for my Extensions to work in CC 2014.1, that I must rewrite my tens of thousands of lines of code in ExtendScript and HTML5???

TIA,

mlavie