The Samsung Galaxy S10 4 models were found on a SG S9+ application system detailed by xda.developers this week and one of them was a 5G version ready, but it is for the Korean market only.
So, for the west world we will see 3 models only as follows:
SM-G970F 5.8" flat display. single rear cameraSM-G973F 5.8" edge display. dual rear camera
SM-G975F 6.44" edge display. triple rear camera and dual front camera.
All 3 will run Android 9.0 Pie OS.