Speaking to Develop, Crytek co-founder Avni Yerli revealed that his company are working on an CryEngine SDK for the mod community! Here's what he had to say:
"Well, for one thing the mod community is very important to us, and down the road will release a specific SDK for the mod community. We have a business model in mind for this – which I can’t get into details of right now – but it will be extremely user-friendly."
"The barriers for entry will be very low, and perhaps even for free. Of course this will be compared to UDK and Unity and so on, but we think this sort of competition is very good for the community."
How they're going to create a "user-friendly" SDK for the most powerful video game engine in the word is a question for another day...