You can find all of the major threads that have to do with the rebalancing here.

The perk changed can be found here. This thread is for general discussion about the perk changes.
The nano changes can be found here. This thread is for general discussion about the nano changes.
The nano feedback thread can be found here. Please note this thread has a set of rules for posting. Please follow the format that XenonDe provided or something similar.
The general rebalance discussion thread can be found here. This thread is for anything that has to do with the rebalance.