For example, the summary of Matteo Grosso's paper, "'Where There Is No Male and Female': The D-Text of Colossians and Women" says:
The textual insertion (ἄρσεν και θῆλυ) suggested by some D-type witnesses in Colossians 3:11 has often thought to have been influenced by the inclusion of the phrase in Galatians 3:28. Grosso challenged such an explanation and posits another: those behind the D-type tradition were influenced by an anti-female bias.
In fact, I understood Grosso's argument for the reading as the opposite. From the viewpoint of internal evidence, the Western reading here is actually pro-female, and therefore goes against its own anti-female tendency (if there is one), whereas the omission in other MSS may be due to an anti-female tendency. Therefore Grosso suggested that the reading is to be regarded as all the more reliable. Grosso presented an earlier version of this paper at the SBL in Rome and in light of the response there he now presented a more nuanced and cautious argument.
Another paper that Rex found to be the most exciting was Geoffrey Smith's on a "New Oxyrhyncus Papyrus of Mark 1:1–2." According to the programme, Smith was actually supposed to talk about the Bodmer Misc. Codex (in which P72 is found). When I told Peter Head that he had changed topic and was going to present on Mark 1:1, he thought I was joking (how could he think that?). Peter has written an article on Mark 1:1, in which he prefers the shorter reading, excluding the words "Son of God." This new papyrus fragment attests to the shorter reading (you should have seen Peter's happy smile). However, Smith proposed that it is an amulet and I agree with that judgment for several reasons. I will come back to that in my own summary of the paper. In any case, Rex points out that not everyone in the audience were not convinced that this is an amulet (perhaps you can guess who).
Rex has also posted summaries of various ETC papers here including: Daniel B. Wallace, "The Text of the Gospels in the Papyri"; William F. Warren, "The Text of the Gospels in the Apostolic Fathers"; Stanley E. Porter, "The Text of the Gospels in Apocryphal Greek Gospel Papyri"