I think the significance of this find may be huge.
First of all, it kills off all suggestion that the Gospel writers weren't eye-witnesses. Secondly we have documents here that date from only 20 or 30 years after the originals.
Nonetheless, since the fragments were found in Egypt, we have to accept that they may have been copied dozens of times en route to that country. There was plenty of time for errors to creep in. However, if the fragments are consistent in supporting the Critical Text then those of us who have supported the Byzantine Text are not going to be able to say that Sinaiticus and Vaticanus were faulty documents that were rejected and seldom used. Depending on the size of the fragments and the number of disputed readings, it may be that we're going to have to reconsider our position. There is no point in hanging on for the sake of tradition.
On the other hand, if the documents support the Byzantine Text consistently, then I think the C.T. will be blown out of the water. Others may disagree, but I can't see how it could be maintained. If, as I rather suspect, the fragments contain a mixture of C.T, and M.T. readings as some of the 2nd Century fragments do, then it will at least prove that the Byzantine readings had an existence right fom the earliest times, which is what Dean Burgon sought to show.
I can't wait to find out more!
Steve