Beginning in early February, the Census Bureau will release redistricting data to the states. The data will include counts of total persons by race, Hispanic origin and voting age for each legislative district and voting district, down to the block level.
Once the data sets are released, redistricting will kick into high gear.
Last week, I attended a Brookings Institution briefing on public participation in the redistricting process. Thomas Mann provided an overview of how this round of redistricting will be more transparent.
For info about DIY redistricting, check out the Public Mapping Project.