What happens after the swap? BTCD will become KMD?
It is not automated. You need to create an account in
https://ico.komodoplatform.com, send your BTCD to the deposit address you obtain there, and request a payout (swap) to KMD, which will be processed in the next batch by james.
Just make sure you have done this by the end of the year, before the last batch swap is processed. BTCD that have not been swapped by then will be left behind.