I know Dark Angels are confirmed in the 6th ed starter box, but someone just posted this photo on an Empire rumors thread:
I noticed that the High Elves for the Fantasy paint set are from the Fantasy 8th ed starter, and that makes me suspect that the models in the update for the 40K paint set are from the upcoming 40K 6th ed starter. Of course, the models do look similar to, or the same as these:
which means they might be using the same plastic tactical squad in the current starter or it might mean nothing.
Just something I noticed.