Anything but Ones has posted some new pictures taken from White Dwarf of new Space Marine sprues
Now it appears from these images that there will be at least 3 chapters getting upgrade sprues to supposedly modify a core plastic kit to represent loyalist chapters, as the above Ultramarines, Imperial Fists, and Dark Angels elude to.
Question remains, how will they be packaged? It will be interesting to see if they make kits that include the new frames or package them separate. One could speculate that this has been a reaction to chapterhouse legal stuff.