I wouldnt want to look that far ahead anyway. One ep, when its been 7 months, yeah. Denying myself new Who for another 5 to 6 weeks on top of it? Nah.While only five scripts leaked, according to the BBC it appears that a total of six episode workprints are in the wild.
I posted a screengrab of the FTP site itself a few days ago with that info, it's a page or two back.
That said, I have looked (for information gathering, you understand) and can find no trace of 803-806. 802 is out but no "avenue for acquiring it" works.
And that's all I'm saying on the matter.