USCIS proposed fee changes will likely take effect sometime in July; the public comment period is open through July 5th.  The proposed changes include the follow forms:

I-129: $460

I-140: $700

I-485: $1,140

I-539: $370

I-765: $410

Public Inspection document: www.federalregister.gov/articles/2016/05/04/2016-10297/...