Taig v2.3 is built from the same tool as the previous version. So most of the same devices are still compatible with this new tool. The devices supported on this new Jailbreak tool are as follows:
How To Jailbreak iOS 8.4 TaiG Jailbreak On Mac
Jailbreak iOS 8.4 using Taig v2.3 On iPhone, iPad [Windows Version]
The tool is currently only available for Windows users. The Mac version should be released in the near feature. However, if you are on a Mac there are ways to use the tool on the Mac. Follow the Mac version Tutorial here.