As of the 2018 tax year, the IRS shortened the main 1040 and moved things that used to be on the main form onto a series of schedules instead. So while you’ll still use Form 8889 to report your HSA contributions and withdrawals, the HSA contribution deduction (if you’re eligible for it) on Form 1040 now shows up on Schedule 1.
But nothing has changed about eligibility for the deduction itself. Assuming you make after-tax HSA contributions (ie, not through a payroll deduction, since those are already pre-tax), you’ll get to deduct them on your 1040 and avoid paying income taxes on the amount you contributed.