After the Windows version of the end of June, Team Taïg released a Mac version of its Taïg v1 tool to Jailbreak iOS 8.4. So if you have not yet made the jailbreak your device, be aware that if you are on a Mac you can do it now. There has been another tool called PPGhost compatible with a Mac but the problem is that this tool uses the Code Team Taïg. Although theft of code, it nevertheless remains that it works perfectly.
Download TaiG for Mac v1.0.0 from our jailbreak tools page.
If the iOS jailbreaking 8.4 you are interested, do it fast enough before Apple releases the final version of iOS 8.4.1 which could correct the flaws. And you will not be able to jailbreak your device on iOS 8.4.