http://mattrhodesart.blogspot.ca/2013/07/concept-art-behind-scenes.html

http://www.spieleradar.de/news/mass-effect-4/0_24476_32547/ankuendigung-schon-auf-der-e3-im-juni.html

You were always interested in total war: shogun 2 but didnt want to spend much money?
You can get a free coupon that allows you to buy the game in the steam store and save 75% OF THE PRIZE!!!
JUst add me and i´ll give you the coupon.
(it´s something to trade in the steam inventory)

http://www.spieleradar.de/news/mass-effect-4/0_24476_32118/wird-die-fortsetzung-etwa-open-world.html

http://www.spieleradar.de/news/mass-effect-4/0_24476_31160/vierter-teil-ein-prequel-citadel-dlc-liefert-hinweis.html

for our english-speaking mebers, here is the most important part of the text:
(i know its bad grammar but i translated it using google-translate)


Mass Effect 4: Part Four prequel one? - Citadel DLC delivers Note

The Citadel DLC for the predecessor are strikingly many background information on First Contact War. This is a preparation for the Mass Effect 4-Setting?

 
Mass Effect 4, which probably is not Mass Effect 4 is hot, yet a big question mark. After completion of the Shepard trilogy raises the question of where BioWare moves the RPG series. After recent speculation after it goes into Mass Effect 4 in the past, to the time of first contact war.

The assumption is based on the new Citadel DLC, which has just been released for the predecessor. There you will find extensive information about the First Contact War, which took place almost 30 years before the first Mass Effect. Now there is speculation that this is a harbinger for a prequel. Why else would the story so BioWare.