The major change in Form 16 with respect to new regime is in Part B of Form 16 where section A (the first line of Form 16) asks 'Whether opting for taxation u/s 115 BAC?' to which there are options of selecting 'Yes' or 'No'.
The computation of salary income and the eligibility of deductions and allowances in Form 16 will be as per the regime selected. Form 16 has columns like gross amount, deductible amount and eligible amount. Your eligible amount figure will be as per the regime opted for. Ensure that you fill form 10IE if opting for new regime as well.
For example: Allowances like HRA, LTA and standard deduction amounts are not accounted for in New Tax Regime.
You will be able to upload your Form 16 on Quicko in the same way.