France will suffer similar to OTL, maybe will not loss Alsance-Lorraine(mayne only Alsalce or maybe nothing) but after that is pretty free, maynbe much like otl with some french revanchism
About Prussia, besided that new germany will have Luxemburg as a extra state in the empire, still need more info
France will suffer similar to OTL, o
Maybe not.
In 1867, the Prussian military reforms derived from the lessons learned in 1866 war won't yet be implmented, while the french military will be the same as otl 1870 (the planned french military reforms were not yet implemented in 1870).
In particular, the new Prussian mobilisation plan will not yet be ready. That has a huge impact as it means the Prussian reservists will not be mobilised quicker than the french ones. As a consequence, the Prussians don't enjoy a two to one numerical advantage over the french professional troops while the french reservist mobilise. This means no such easy victory at the beginning of the war and it means the french troops in the second half of the war are not all green. So the Prussian victory is by no mean ensured and even if it comes is unlikely to be as crushing as otl.
This.
An 1867 war will not be another version of the OTL war. France certainly isn't guaranteed a win, but it will likely be much less one-sided than OTL.