After 20 years and billions in investment the Colombian coffee farmers should be exporting the first of a new 'Roya' or 'Leaf Rust" resistant coffee after the harvest at the end of this year.
Al Jazera article here. http://www.aljazeera.com/news/americas/2013/06/201363224629458776.html
We have heard that natural hybids with similar rust resistant properties are now coming out of Java after they were hit with Rust about 16-20 years ago also.
It going to be interesting to see what they taste like...