"After 10,000 years the lost brothers return" This apparently comes from someone that has or has seen next week's White Dwarf already. Of course now we have already seen the leaks for the February 6th White Dwarf which reveals the Wulfen models.
A return to 40k is going to be a lot of fun.
via Lady Atia in the comment section here on Faeit 212 and on Bolter and Chainsword
http://www.bolterandchainsword.com/topic/316510-a-little-new-years-teaser-the-wolves-are-coming/
After 10,000 years the lost brothers return - soon ^^
and This
via BramGaunt on Warseer
http://www.warseer.com/forums/showthread.php?415310-Space-Wolves-in-February-2016&p=7597625&viewfull=1#post7597625
Some german guy claims he has the new WD and the teaser reads (roughly translated)
"After 10 000 years the lost brothers return."