Volkswagen and the TDI Plaintiff’s Steering Committee were in court today for another status conference following the agreement in principal reached earlier this week.

Little new information was given at the conference held before Judge Charles Breyer today, but the court ordered the parties to develop a formal settlement agreement, class action notices, and a class notice plan by January 31, 2017.

For now, though, owners still don’t know how much to expect in compensation. Elizabeth Cabraser, lead Counsel for the Plaintiff’s Steering Committee reaffirmed in a statement today that the compensation would be “substantial.”

The potential cost to Volkswagen is widely reported to exceed $1 billion, though, with an additional $225 million going into an environmental trust to help offset excess emissions.

Buy back offers are still only expected for the oldest 20,000 of the roughly 80,000 VW Group vehicles sold in America with the 3.0-liter TDI engine. Those vehicles are mostly SUVs, like VW’s Touareg, Audi’s Q7, and Porsche’s Cayenne.