Yes, as mattsm said, things are coming along nicely. No timeline is known yet. When it's done it's done, since most of us are doing this all in our spare time. The updates to PPCKitchen are gonna be awesome, I can tell you that much, and I am making it a goal to also have the Rhodium and RhodiumW support ship with that update. (Thanks to Mattsm for the help with that so far
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If all goes as planned and no major hitches are found, PPCKitchen will be building XIPs on the fly, NO MORE XIP PORTING NEEDED! (We have successfully tested this, even for a nuekernel Titan XIP, so so far, so good.) It will also be recmodding modules on the fly so it can support both 6.1 and 6.5 kernels with the same source files. There are some other features coming as well, a lot of them behind the scenes, but overall, it should be a WHOLE LOT easier to use and well worth the wait. (which hopefully shouldn't be too much longer
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For further updates, just check out the main page at
http://www.ppckitchen.org/ as updates will be posted there.