The below review is a summary of the description I gave to a friend so it isn't really made to be easy to read and I cba re-writing it. tldr: this is a very basic version of Civ, the interface is irritating and it's hard to do stuff at times. Wait for a bunch of DLC releases then a sale to make it worth while. It is also going to be a shameless DLC grab, there are currently 3 maps, tiny, small and standard, clearly intending to release large etc. later but at what cost? It's more like a cut down version of Humankind, so if you didn't like Humankind don't get this.

OK so there are a lot of changes. Some of the interface is now rubbish because it's primarily made for consoles. Probably get better for PC later. You cannot queue science or civics in the menus, you have to choose one at a time. You can queue production but you have to create a production, get kicked to the map, then go back in to the city to queue other items. You cannot see what production a city just completed which is annoying especially when you have just loaded a save game and cant remember what you set it to last time. There is no guard mechanic for protecting settlers etc. However you can create armies from an early stage with commanders / admirals that you can make for low resource requirements. Combat so far is the same as Civ VI. There is no religion currency anymore, developing religion is through culture and civics, religious units are made through production, conversion requires a religious unit converting 1 rural and 1 urban improved tile in the target city, pressure is similar still. However, this means that religious dominatino is even more involved and micromanagery than previous because it's so easy for opponents to do the same to you. There are only 3 "ages". In each age you need to select a new nation with different bonuses and unique units / buildings so you need ot try and choose ones which synergise others over the game length. There are rogue-like elements, completing challenges e.g. having 4 temples, expanding on to multiple continents unlocks additional nations you can play on the next play through.
Cities need to be manually expanded when their population grows by selecting which tile to work. As a result you cannot just change which tiles are being worked, you have to select one at the time and cannot alter this. When building on top of exploited tiles you might have to destroy the improvement and then "grow city" to replace the improvement you just destroyed. In the later game this is n't a big issue because the city items you can produce outweigh the tile worked income. New settlements are "towns" they grow and produce gold but you can't produce things in them. You can however spend gold to buy things in them or to convert them to cities which is initially expensive but gets cheaper as the population of the town increases. It won't prompt you to use air units so you have to remember where they are and use them. It also ends in the "modern" era at the moment which is WW2 era effectively. There are no "strategic resources" either, you can build whatever you want regardless of supply
It's a much simpler version of Civ, if you are wanting a true remake I would wait for a lot of DLC releases tbh, plus sales