The first update for ColdFusion 11 is now available to you for install from within the administrator via the update mechanism.
Here is the link for the associate technote which details out the important issues fixed.
EDIT: There is an upcoming update (post update 1) that has more than 100+ bugs fixed for CF10 and CF11 along with updated platform support for recent releases of OS, Application Servers, Java 8 and Databases. The intent of this first update was to release some of the critical issues blocking CF11 use sooner than making it a part of the larger upcoming update.
No credit card required.
Online certification now available