The distance doesn't matter, since these are moving groups.
The new design differs from the old one only by the last two groups - L5 and L6.
Other than that, the two designs are identical.
So, the new lens will most likely be as big and heavy as the old one (unless they change the lens barrel ??).
We can't tell from the design diagram if this will be an IS lens or not.
The L3 group seems like a good candidate for the IS unit.