As noted on the Evangelical Textual Criticism blog:
Papyrus transcriptions made available through Institutional Repository
Following the release of the Vetus Latina Iohannes transcriptions, the International Greek New Testament Project (www.igntp.org) has made available its transcriptions of papyri which contain the Gospel according to John on the University of Birmingham Institutional Research Archive.
The following twenty-seven witnesses are available from the repository as raw XML or can be viewed as they appear in the prototype IGNTP transcripts website can be viewed HERE
Note that when click through to the transcripts, you actually have access to the whole Gospel of John project which includes this new collection of papyrii, Majuscules, and Latin. (The Minuscules and Coptic are not yet available.)