Has any update said anything about the greenbelts that I just saw?

I use 1 book for each category (science, oil, smelting area) but i've seen videos of people with more than 30 books. Concerning proposal 4, i think that depending of the amount of mods that add content, 30 books could be a low number...

And about proposal 3: YEAHH keep it simple!!! :D
There would ...

IDEA: Vacuum Tubes
Like the ones in portal 2 or Oxygen not included... they would work very much like belts (one way only), with insane throughput speed, and being able to deposit contents directly inside chests (like pumped liquids inside a storage tank)?
This way the throughtput could be buffed ...