Along with the pre-registration page and the contest, Sprint also wants to let you know that the GS5 will also be Spark compatible (where available of course), along with Pinsight Touch supported. That is a nationwide open platform powered by Sprint for NFC-enabling mobile applications.
Head over to the Sprint Samsung Galaxy S5 page to pre-register and enter to win. Be sure to make sure you are eligible to win and know the rules before hand.