A LOT of forms aren't ready yet. A number aren't even finalized yet by the IRS and many states, including California. Quite a few aren't scheduled to be ready until the end of February, believe it or not and this is the case pretty much every year.
The IRS isn't even going to start processing returns until February 12, 2021, so filing now does you absolutely no good - being the first to have your return sit on the server doesn't help you out one bit, and actually tends to cause a fair number of problems.
Come back on February 12th and file when the IRS is actually processing returns. More things will be available AND your return will be processed within a few hours or days after you submit and won't just be sitting there where you will be unable to make a change when you remember something else or another form shows up that you forgot about.
