According to the what's new section:
Available from June 9th, a firmware upgrade for existing NEX-5 and NEX-3 cameras adds the new ‘Picture Effect’ function as introduced on the new NEX‑C3. It also adds a Peaking function to assist with more precise manual focusing. Available free to registered users, latest Version 04 firmware update for NEX-5/NEX-3 can be downloaded.
But no link to be found anywhere?????