The Thinite update is almost finished, only bugfixing to do. But in the meantime you can have access to its beta in the Beta area of the Settings via Steam !
Here a list of some of the new things in this beta for the moment:
-the 2950BC start date with the events around the 1st civil war which historically ended the 1st Dynasty(even if we don't really know exactly what happened apart from a division in the royal family)
-the 2800BC start date with the events around the 2st civil war(even if it was more likelly a division in two kingdoms for administrative reasons and that one king take a Name of Set and not a Name of Horus)
Those events will also happen if you begin with the 3100BC start date or depending of your choices in the previous start dates.
-a 6th technique for each domain
-an administrative inefficiency growing with your number of scribes
-dozens of events around Egypt and its unification and first centuries of existence
-changed how you levy your troops
-changed many user interface to look better(icons for buildings, full rework of the main menus before you launch the game) and be more readable
-many tweaks here and there
-many bug fixing with the main one being a bug around the save system