As has been announced all over, Kodak TMax P3200 film will be released this month. In fact, Kodak has announced bricks of this 35mm film will be shipped to the USA on Monday. Many shops are declaring that this film is already available, such as Film Photography Project (use the code at Get a buckoff for $1 off a roll) and Film Supply Club. Film Supply Club offers film at cost for a monthly fee of $12 paid annually (i.e. $144 per year).
This film was announced earlier in the month, and is a nominally E.I. 1000 film that can be pushed to E.I. 3200. The E.I. stands for Exposure Index, and is the correct notation to use for the speed of a film that either does not have an ISO standard film speed (like P3200) or is exposed at other than the box ISO speed (thanks to TOP on P3200).
Ilford has mentioned that they not only provide a T-grain E.I. 3200 film like TMax P3200, but also have a 120 roll film version available also. P3200 is available only in 35mm format.
The grain on T-grain films is very fine, so even at E.I. 3200, these films will have a nice look. Imagine it in 6x6 format.
Adorama has an interview with Alaris on P3200. While Adorama does not list P3200 on sale as of writing, they should have some soon.
Robert Shanebrook, author of Making Kodak Film, points out that introducing another TMax film is fairly straightfoward compared to reformulating Ektachrome from scratch. Ektachrome uses different manufacturing processes and techniques, while P3200 can be formulated using the existing TMax processes.
Ag+ Process is not a customer of nor has any dealings with any of Adorama, Film Photography Project nor Film Supply Club. It is recommended to research these shops yourself. See also Ken Rockwell's recommendations (updated and worth the read).