I watched their Q&A today, and am now... Less optimistic.
Armor value is gone.
Templates are gone.
Lasguns can now hurt Land Raiders.
Formations are gone, though more complicated/specific detachments are now available.
Allies are now heavily discouraged, at least based off of what they're saying.
They're actually going with 'Whoever charges first, hits first'.
Oh, and the rules aren't going to be free, or even any cheaper to get universal access. Unit rules will be split into a number of books (for 'Space Marines,' 'Imperium', 'Xenos', and 'Chaos', or so it sounds,) at a 'lower pricepoint' than codices, but if you want detachment rules or other special options you need to buy that army's codex as well.
Angry reacts only.