Heredis 2015 will be out on April 8, 2015. I don’t have any specifics yet (those will be released on April 8)., but I can tell you that should you purchase Heredis 2014 between now and April 7 (through Heredis.com), you’ll receive Heredis 2015 for free.
Heredis is cross-platform, both Windows and Mac, and also has a free mobile/iOS version for iPads, iPhones, and iPod touches.
The announcement video is below (and it’s in French, and doesn’t show Heredis itself):