Next update will be on 25.03.2020

It will include the possiblity for the player to buy latifundae near villages. To do this, you must talk with the village elder: You need 50,000 denars. more than 250 renown and more than 10 relation with the faction owning the village (e.g. if you joined rome this should be easily possible)
The reason for the positive relation is to make somewhat sure that you wont declare war to the faction (if you are at war with the village faction where your latifundium is you wont recieve any rents)
(btw, you for one village you can buy one latifundium, it will spawn next to the village as a new party)
When you consider to buy land, you must consider several additional investments, otherwise you wont get much money from it.

Right after you bought it, your latifundium only has a grain field. The grain field will produce ONLY during the harvesting months (iulius, augustus and september) money

So it is really important to build buildings.
Buildings:
Raw goods:
- grain field (produces only during harvesting season),
- vineyard (produces only during harvesting season),
- olive grove (produces only during harvesting season),
- fruit gardens (produces only during harvesting season),
- fishery (all year),
- cattle ranch (all year)
Goods:
-blacksmith (will only generate a bit wealth, but will give a modifier to the other buildings and you can refine your armors and weapons there much cheaper than a normal smith in towns),
butchery (needs a cattle ranch),
pottery,
-bakery (needs the grain field, when build, the grain field no longer gives you money during harvest, as the grain will be used for the bakery, but the bakery will give you during every month money, additionaly, the total yearly income is more than the total yearly income of the grain field),
-winepress (needs vineyard, works like the bakery)
-oilpress (needs olive grove, works like the bakery)

Every production side needs slaves, if you dont have enough slaves, the efficiency will be lowered (this means you will get less rents), so always make sure you have enough slaves.
But, if you have more slaves than needed efficieny will be improved and you will get more rents!
There is a maximum of 100 slaves possible to be put as prisoners into your latifundium (talk with your adiminstrator to do that)
But you can build additional barracks to increase this amount to a total of 200 slaves
Slave population can also grow over time (since the slaves also have family), but on the same time, slaves die, especially from bandits and wolves (or other animals). In total this means the population wont grow (but it will also not decrease). To prevent your slaves getting killed you can build a small wall around your villa. (this all sounds silly when you readit for the first time, I am sure, but indeed, wolves and wild animals and bandits were a problem on the country side during ancient time, even in the roman empire; as example: there are many spells and magical stuff with deals with matters such as bandits and dangerous animals and I want to reflect this in some sense, also I want to give the 'wall' building a meaning, on the other hand, if you dont like that explaination you can also think that you slaves cant escape if they life behind a wall)

So there are other buildings too I want to summarize here:
- barracks (increases slave capacity to 200)
- guard houses (adds guards to your villa: If the village to which your estate is bounded gets raided or infested by bandits your rents are lost, as you estate will be looted too, but with guards they can prevent this from happen, additionally they add a little bit to slave growth)
- walls (add to slave growth)
- temple (increases efficiency, with divine help and thus your rents), you can also chose the deity for the temple. If you worhsip the Christian or Judean god you can also build a temple for them, a priest will then spawn, where you can make sacrifices or pray
- pavillion (also increases efficiency (I really dont know why...), but not much, only with 1%)

you can also higher a magister ludi to teach your slaves, but he will cost you 500 denars per week
The teacher will increase efficiency too
The buildable buildings will spawn on the scene, together with a 'master slave' who oversees the production side

Dont expect that the estate will give you as much money as a village! Especially at the beginning. It is something you must invest into it.
But still, a village with a mine (especially silver) will probably be more profitable. (which is kind of obvious)

Another important thing: If you dont own the village where your estate belongs to, you have to pay a tax to the village lord. But the amount depends on your relation with him. If your relation is high enough, you wont have to pay any rent. The lower it is the more you must pay.
(Of course if you own the village, you wont pay any tax, also if you are the Emperor you wont have to pay a tax, even if you dont own the village)

And last but not least, there is only one scene for the villa, its a scene which looks kind of mediterranean. So for immersion, I suggest to build your estates in Spain, Italy or Greece (its also a good idea, sinse the villages in Gaul or near the border get raided frequently if the Empire is at war)

Another thing:
I added a new modifier depending on your reputation: income from slaves in villages and slaves in estates will be increased if you have bad reputation and lowered if you have good reputation
This should simulate that if you treat your slaves better (since you have good reputation) they wont produce that much (like tyranny increases slave output in Imperator Rome)

EDIT: Two things I forgot:
There is again the shift shortcut, so you can access the administrator quickly
All prisoners you but into your estate will get automatically converted to slaves!