*Speculation*
I was wondering if the dawnshard/s is/are splinters of Honor. Or maybe it is Honor itself, thought splintered all these times...
And probably hidden/protected by holder of Cultivation.
I think.
I have no evidences to these, just gut feeling and hoping thats how it is, hence speculation.
I mean why would the Desolation keeps repeating and Odium keeps trying to get to Roshar. His targets are the shards themselves, if he keeps trying then probably thats because he hasn't really destroy/splintered Honor.
Or maybe he is just trying to get to Cultivation...
Also I think Cultivation can be found by starting from Shinovar. If She is still in Roshar...
I really really hope we get to see more about the Dawnshards and Cultivation revealed in the next books #superexcited