Building development intelligence Chip’s are one of several some newly added items that you need to finalize the Building Development research tree.
The added branches on the Reseach tree is very rss intensive as you can see on the picture below.
Most of the resources are in the KT / TT area, making it very expensive to research.
The added Attack Bonus on the buildings seems to be in addition to the Building Boost already present in building. It’s still a bit of uncertainty of it being stacked or not if you choose the attack boost in the Building Boost randomizer.