USCIS has published a revised version of Form I-907, the Request for Premium Processing Service. This version has a 1/29/15 edition date and can be downloaded from the USCIS forms page at

Beginning June 1, 2015, USCIS will only accept the 01/29/2015 edition of Form I-907. Previous editions of this form, with edition dates of 10/19/11 or earlier will not be accepted on and after June 1, 2015.