This is not exactly new, but version 1.9 of Cobertura is available. It's not a big update but is worth getting just for the improvements to the branch coverage reporting. I found the branch coverage of no use at all prior to the 1.9 release. Now it is one of the best features. Instead of marking an "if" statement as 100% covered when the "if" block was never entered, Cobertura now requires all conditions to be tested for 100%. The html report even has a nice context popup that tells exactly how many conditions have been tested.
Version 1.9 is a seamless upgrade. I was able to drop it into our builds without any changes to the Ant scripts.