As introduced, increases, from one to two, the minimum number of municipalities authorized to enter into interlocal agreements with any county; increases from 30 days to 45 days, the time period in which nominations must be received by the department of economic and community development for nominees to the regional planning commission; makes various revisions to the law governing local government apportionment, planning, and annexation. - Amends TCA Title 5, Chapter 1; Title 6, Chapter 51; Title 6, Chapter 58; Title 7, Chapter 32 and Title 13, Chapter 3.