I've read that this section of the tax code was revised in 2016, but I wasn't able to find anything about it on the IRS website.
If you timely made the Section 83(b) election by filing with the IRS, you're not required to attach a copy of the election to your income tax return.
For more help with the election, please follow this link. https://accountalent.com/83b-elections-for-dummies/
Please provide a link for the revised code, if you can.