I received notice yesterday ,from Bibble that now M8 & M9 are supported.
To me this Raw converter is better that Lightroom in many ways. Has Layers, regions adjustments,selective editing and brushes. Bibble has items that are in Photoshop, saves you from going back and forth in each program to get your final results.
Price is low. Check it out http://bibblelabs.com/products/bibble5/learn/