Hi colorpyen,
There is some plan to update sphinx-for-chinese to the latest 0.9.10 version but I am afraid it won't be soon due to some personal reasons (I really have no time for the time being). But I think if you have some programming experiences it will not be difficult to make the update according to current version of sphinx-for-chinese. You can diff the source code with original sphinxsearch, and you'll see the modification is not too much.
Coreseek is one of the modified version of sphinxsearch, and sphinx-for-chinese is another one too. Both of them are aimed to provide more efficient way to index and search Chinese and they are using the same Chinese segmentation algorithm (MMSEG). But sphinx-for-chinese is focused on the built-in segmentation implementation and doesn't provide the python data source compared to Coreseek. So in my opinion sphinx-for-chinese is much faster than coreseek and the way of segmentation is much more customizable (you can add any characters to the dictionary).
I will update sphinx-for-chinese as soon as possible and don't hesitate to mail me if you have any questions.
Thanks~