Unit names and capabilities confirmed
1. First handgun 'infantry' is now called Arquebusier rather than Musketeer. literally breaking tridecade old traditions deliberately.
And now... ranged unit. and 'ranged' means a full range of TWO HEXES! rather than being the last Melee combat infantry of this age.
This reflects Civ7 gameplay concept that each one play now a campain of three scenarios set in the same map. and not a continious playthrough.
Heavy arquebus has a range of archers or light cannons huh? translating into Civ6 system this 'arquebusier' has a range of 1 (one) hex away, similiar to slinger.
Does a heavy 'forked' musket has the same range as bow and medieval war crossbow? What I know is that
1.1 A generic musket has a nominal range of 50 meters. or 100 at maximum
1.2 my latest googling shows that a medieval war crossbow (using steel prods) has a maximum range of 300 meters. thrice a range of generic infantry musketry, and roughtly a range of magazine rifle of carbine lenght.
Interesting enough. ranged choice should be either Sakers or Demiculverins.
My speculation is right since this expressed 'different age, different rules' (and the world becomes increasingly bigger. Two hexes distance of Age II are smaller than 1 hex of Age III.)
BUT. historically heavy field cannons (the 24 pounders to be specific) of 1500s can have a range of exactly a 1 (one) kilometer. this thrice the range of archers. I'm not sure if lighter field guns (of 12 pounders at maximum) also has reduced range? or forked heavy muskets do have their nominal ranges extended beyond those of generic musketry.
The only reason for this is that it is intended for a pike and shotte formation to be made manually. at different proportions possible. though these are not what pike and shottes are commonly deployed.
^ Breitenfeld is one such examples how pike and shotte are actually deployed.
The other possible reason is to reflex the limited use of field artillery before 1600s (or 1700s).... light field guns didn't have really better ranges than heavy muskery or what?
2. Lancer now being successor of knights, but being 'lancer' only in name

Cholan 'lancers' are actually pistoliers. but this could be 'self upgrading graphics' if gunpowder is researched.... maybe FXis did pursue the use of Technical upgrades as purposed by
@Boris Gudenuf . Heavy lancers wearing heavy full plate armor of 15th Century didn't show up at all.
Exactly against my speculations.
3. And bombards shown here is shown as supergun with no trunions. exactly the same big gun in Civ6.
4. Galleon returns! after so many installments of absence. What would maritime history be without galleons?
And good thing is that Caravel now becomes scout transport rather than a full unit. this due to their small hulls, too small to mount big guns properly.