If you are interested in converting your current P4 Pro to PPK follow this thread. Before you invest in the P4(5) RTK this might be something to try with your current gear. I should get my gear in the next week or so and will be testing along with these guys. Mostly testing the mount. We will report back.
Oh, and I should say that we assume PPK because even though it is RTK capable you will get the most accurate result using PPK. You can’t rely on having an RTK fix all the time…Same with the new Phantom so it will be interesting to see what solution they provide.