@digrace , I think someone finally put a clear answer on the feed, so it sounds like it needs to be printed and sent in this year:
The federal Form 8829 should be available for print AND eFile.
However, the California 8829 was not ready in time for the eFile system to be properly configured, and you will need to mail your state return this year to claim expenses for the business use of your home. Also, the form is not yet ready to print.
