From the previews we have already seen about 10 new units (not present in eb1), what new units we will see when the game is released?

I only managed to figure these: seleucid agema cavalry, pergamene hetaroi/kataphraktoi and ptolemaic/seleucid "imitation legionaries"

Most likely is pergamene hetaroi, seleucid agema cavalry in eb1 was apparently represented by hetaroi so maybe it will stay same. Pergamenes are said to have used cataphract like cavalry, but the use of it might not have been significant enough to justify a unit slot. Imitation legionaries is quite delicate subject because reserchers apparently haven't reached conclusion about the accurate nature of these troops, so I don't put high hopes in seeing roman style hellenic infantry other than thureophoroi and thorakitai.

You can also post units (from eb1) which you suspect will be dropped out due to being historically inaccurate/not significant enough.

PS. of course we can't give names to most of these units but that doesn't prevent us from speculating with what type will they be.