There is a article on ign and the developer said he WOULD like to do one for iOS and it would be freemeium to hit a wide arrange of gamers. Hopefully there is a proper wipEout game if not I'm happy with repulze.
Well first and foremost, Sony Liverpool (Psygnosis) is dead so the devs aren't really with sony anymore and this being a first party sony game it would require sony's approval which seems unlikely. This ex-member of the liverpool studio was speaking hypothetically so don't read too much into that quote. It is his dream project but it won't happen.