New parking meters in San Francisco are planned for in a pilot program starting 7/2010
Look for new parking meters in Hayes Valley and several other San Francisco neighborhoods including West Portal in an effort to charge for congestion pricing and keep parkers moving, making spaces available for others.
The pilot program will run for two years and I suspect, begin implementation sometime thereafter. The meters will make it possible to pay with coins, parking cards and credit cards.
An update-I heard on the news a few nights ago (8/11/10) that the proposal to pay at meters on Sundays was scrapped.