A new paper on radiocarbon dates from 4th-early 3rd millennium BC Egypt has been made available for free by the Royal Society. Of course, the paper is not the most important part; the data matters much more. The highlights: First Dynasty begins anywhere from the very late 32nd to the late 31st centuries BC. Second Dynasty begins in early 29th century BC. The Naqada culture begins in the 38th century BC. The ever-important last author is Christopher Bronk Ramsey, proponent of the Modified High Chronology for Iron Age Palestine.
If you didn’t, you should also read this data supplement to an even more important paper. This data supplement is linked to on my Chronology page.