With the Samsung Galaxy S4 presumably coming soon, many are excited about the possibility of running a more stock Android-based experience, like CyanogenMod, on the hardware. It looks like that's going to be a slower transition than many were hoping, as the current Samsung CM maintainers have said that they have no plans to support the device.
The relationship between Samsung and the people trying to hack CM onto Samsung phones has been pretty tumultuous as of late. On one side, Samsung has to try to protect their IP. Some of the decisions they have made to help do this just aren't very developer-friendly, and some even violate the GPL (an open source license that covers everything in the Linux kernel used in Android). On the other side, you have a group of people that have to have a little access to this IP so they can build a working firmware for the device. They need everything covered under the GPL, and even a little friendly advice from the manufacturers is what it takes sometimes to get everything working just right. With the two sides unable to get together, frustration has set in and the developers have spoken.