Latest open beta's out. Mostly changes to the economy - Now the investment pool is reworked so that it'll automatically build some industries based on the economy you're running.
Traditionalism is still awful, with severe maluses to the investment pool. Can only build farms, plantations and ranches.
Agrarianism increases the investment via aristocrats and reduces them from capitalists, and allows farmers to contribute. It'll automatically build farms, fisheries and the like.
Protectionism has no real maluses or buffs, just an extra 50% private sector construction, the ability to subsidise every industry, and the automatic building of any industry.
Laissez-faire increases the private sector's construction up to 75%, only allows subsidising infrastructure, reduces loan rates, prevents downsizing of non-government buildings, increases shopkeeper and capitalist investment, and disallows automated agricultural construction.
Cooperative ownership (new) makes farmers and shopkeepers the only investors as capitalists and aristocrats are abolished, same automated construction as laissez-faire, but the amount of private construction is halved and, shopkeepers and farmers being poorer, reduces overall investment.
Command economy enforces subsidies, removes the investment pool (All funds already in it are given to the government), increases authority 25%, and gives the government the profits (Although it'll start incurring inefficiencies the larger the number of industries under government control gets)
There's also changes to government, parties, and how legitimacy works.