According to the Macodirect newsletter I just read, RPX 25 is being introduced in both 120 and 135 formats.
Also the existent RPX100 and 400 get a "face-lit" by being packed in boxes! Great to see boxed rolls again!
The entire RPX family in new boxes will be available from January 2014.
Given that both RPX100 and 400 are coated by Harman/Ilford Photo, I wouldn't be surprised if RPX 25 is made by the same people.