DHS final rule is increasing the premium processing fee charged by USCIS. DHS is increasing the fee by 14.92 percent, from $1,225 to $1,410. This rule is effective on October 1, 2018. Applications postmarked on or after that date must include the new fee.

https://www.gpo.gov/fdsys/pkg/FR-2018-08-31/pdf/2018-19108.pdf