Well, that was rather quick - merely a couple of weeks ago, the developer behind the framework that makes modding an Android device as easy as abc, revealed that he is "on good way" with the porting of his Xposed framework to Marshmallow. Rovo89 gave no ETAs were provided and the developer revealed that the port will take some time due to code complications, a working version of Xposed for Marshmallow got released just recently.
It comes with all the major bells and whistles that die-hard Xposed fans have become accustomed to, but unfortunately, some limitations exist. First of all, most of the modules in the Xposed repository will need to be updated in order to function as intended.Secondly, the Marshmallow variation of the module has only been tested with Chainfire's SuperSU, which means that it has only been tested with certain SELinux rules.
Speaking of SELinux, the Marshmallow variation of Xposed does not provide access to certain preference files, which might affect certain modules. Last, but not least, not all Xposed APIs have been thoroughly tested, so certain aspects of the framework "still need to be adjusted for Marshmallow".
The Lollipop version of Xposed also received some love, or at least is scheduled to do so: the developer revealed that an improved and refreshed version is on the way.
Anyone tried Xposed on their Marshmallow device yet?