Yup, I have concerns, bottom line is its free so I can test it out without having to pay out fifty pounds or whatever for a giant rulebook or try and borrow someone else's who paid out fifty pounds for a giant rulebook. If its terrible can keep using 8th edition until GW change course if it bombs, and continue to get high quality kits from GW so who cares. Its not ideal but I still play Necromunda and Gorkamorka and Mordheim and they haven't been supported in years.

Certainly won't be getting the box though, don't like the muscle clad marauder look at all, and th Sigmarites look stupid and its all stupidly hyper masculine.