I tend to see the modern age focused in the s.XIX "empires" more than in current countries so, while de-colonization may be included in potential ways (loyalty, foreign power conquer) I do not see it as a main topic yet. As comented in some points above, the bigger, "American" decolonization will be more part of a exploration era crisis
(note it seems crisis can be of several ways and randomized each game, so I think in one game you may have colonies revolting, in other one plague spreading through your civ, in other religion wars, etc....)
Industrialization (and, I will add, Technological Progress) will be inded a theme, and I do expect several features based on it. Main one, the generation of manufactured resources (in the likes Civ VI Toys, Jeans, Perfumes..., and the spirit of Civ IV or Civ VI corporations). I expect to produce a manufactured resources you need a factory in a settlement, and two or more "base" raw resources assigned to it. The manufactured resource can then work for you and other players as an additional resource available in that settlement.
Economic victory points can be awarded by:
- Manufactured resources you have access to
- Manufactured resources you are trading away (this is, trading resources gives points to the receptor -resource availability- and the trader).
- Manufactured resources you hold a monopoly position for bonus (this is, if you are the single source for a resource, more points are awarded to you).
Probaby the system must be tweaked a bit to avoid ups and downs in the victory points counter, but I expect we will be seeing somewhat similar to this.
I add Technological Progress as it is industrialization-linked and I feel will be the focus of science victory in this case. In civ'VI modern age, we are in the age were machines are revered and are expected to open multiple wonders to the world. Is the time of science fairs and world expos, and yes, it will culminate with one of the promises of all this technology: to reach the stars (space race), so
science victory will probably have that, but I think, however, we can see more of these science-production races during the age, maybe linked to some wonders (so science will borrow now partly the mechanic for ancient age cultural path), and maybe linked to general town development with multiple types of buildings.or projects related to several "progress" milestones: railroads, electrification, radio,...
Tourism: Culture may be tourism-focused. Indeed in this era is when tourism and archeology make as well an important, if elitist, appearance. But elitists is not bad to consider it for victory points. - in fact, once something is popularized enough, probably would it would lose part of the "special" aura that makes it count for victory. Also, the trailer suggests works of art will be a thing, that we have not seen already, and these would fit as well in a tourism/influence - focused culture victory. Yet...
Ideology is other culture-strong focus that we expect to be added. In Civ V they managed, nevertheless to make it work hand-to-hand with tourism, but I see not both of them mixed in the cultural victory. Therefore, as some other posts suggested, ideology would be a principal contributor to
military-expansionist victory, by generating blocks and benefiting the conquest of those in other ideology block (as exploration age benefits settling/conquering distant lands). You may even have a "peaceful" expansionist victory by pushing your ideology trough diplomatic actions and generating revolts. From what we have seen of governments, I do not know if it will match much with previous eras, but the fun of the system is that things can change.
UN / Cold War seem a bit late to be a major era mechanic in this scenario, but maybe a WMD-MAD crisis would work as a final climax. In the same way, post-WW2 decolonization - "peaceful" independence movements could work as a crisis. .
<-- This is, Nuclear Ghandi will be the final Civ VI crisis
This does not fit the meme, but loss of economic power from states to corporations and market as well (shortage of resources, 29's crack?) could be also featured as a crisis. And of course pollution/global warning has been mentioned.