where can i find the es form 540 2021

so i made my 2020 tax return state. When it finished, there was an estimated tax return for 2021 with voucher 1 due on april 15 2021, voucher 2 due on june 2021 and voucher 4 due on jan 2022. i don't see the es 540 2021 in turbo tax. Should i just send the check with the voucher for april 15 2021 with any es form 540 2021? 

 

And why all of a sudden i have to pay for estimated tax for next year? i didnt do this or have this last year when i file my 2019 tax return.