SCS software gives an update in reply of the many comments on their blog related with truck brands. SCS says it's not only good news. SCS is working on converting Volvo and Mercedes into Vailant en Majestic again, as in the previous games from them. There is another big brand whereby the licenses aren't finished yet, but they don't let us know which brand.
SCS has some good news as well. After the release there will be more updates and interesting stuff in ETS2, but that's still a surprise...