But really, that was sourced from an old document and I don't know if there's a canon document that documents the next 1000yrs.
If someone can point me to one I'd be very grateful.
There are documents, but they belong to Frontier. It'll be up to them how and when the lore information gets developed further.
Its a tricky balance really. There's a lot of websites already made by writers, players and the game makers. The content of canon and lore is something many people were (and are) interested in, but I'd expect its down the list of priorities to finalise as the initial material (to shape the environment) was good enough to start everything. Usually you then need to come back and tidy up before you release the material.
As things stand there's loads of published canon material in all of the books. These add to what's in the Frontier Gazetteer.
I've blogged a bit about the development of the guide material and my part in it. In helping write it, I gave all rights to the material I wrote to Frontier. think you do have to accept that they've got first dibs on posting anything on a website.
So, in answer to your question, there's several huge documents that push the timeline right up to current, but they are for Frontier to determine the fate of.