The home office worksheet is showing available now. It does use prior year information until updated. If you are using the desktop program, you need to update. There have been no changes in the form or instructions other than updating the dates.
Home office deduction benefits small business owners
The IRS does not open until February 12. They work on forms from most common to least common. See Federal form availability for expected release dates. Once released, we work to incorporate them quickly.
I am using the online version, and it does not seem to be updated there. As it is still asking me to input my 2019 expenses instead of 2020.
This is just a section that has old dates 2018 & 2019 instead of the correct 2019 & 2020 ... this typo will eventually be corrected but it doesn't affect the return ... ignore the old dates and continue.