It seems like White Dwarf is very much being leaked page by page now on 4chan, Bols Lounge, and Bolter and Chainsword. In it are background, decal transfer pics (which look like they are part of the Imperial Knight kit and sold separately), and a hint which I have only seen on 4chan for next week's White Dwarf.
4chan leaks show us page 21 of the White Dwarf, revealing the following phrase;
Next Week: Freeblade Knights
Does this mean we are getting more Knight options? It could very well be the case.
White Dwarf mentions specifically that within the Imperial Knight kit is a transfer sheet with 282 separate transfers.
Here are the links to check out the latest leaks from the upcoming White Dwarf magazine.
from the pics here are the houses mentioned courtesy of Warseer
Houses mentioned on the two decal sheets:
Terryn (first Knight house founded)
Cadmus (recently transferred allegiance from Admech to Imperium)
Raven (Largest Knight household, based on Forge World Metallica)