Surprisingly the rumours we have been hearing about this have all proven to be true.
In my opinion this makes this set a better value than the Calth set which was already a good deal. Depending, of course, on whether or not you just want a marine force vs. total number of miniatures.
You basically have the same format as Calth with the Contemptor being replaced by 5 Custodes and 5 Sisters of Silence.
I'll probably paint up the first box of this I buy as needed for the board game. The second box I'll probably do all of the marines as Thousand sons.
So all the marines will be in MKIII armour, which is something the fans have been begging for since Calth came out.
Plastic MKIII marines will make a lot of conversion possible for some of the specialist squads, like Breachers.
It is tough to see the Sisters of Silence but they might be convertible to Sisters of Battle. Tough to tell from the small picture.
Too bad it doesn't include a release date. I guess we are about a week out from when the White Dwarf should be released with more info.
So maybe 1st/2nd week of November?