So far, three model numbers are linked to future Galaxy S10 models – SM-G970. SM-G973 and SM-G975which should match the Galaxy S10 Lite, S10 and S10 +. So the fourth comes as a surprise.
The new addition to the smoking machine is SM-G977 and the only variations of this model are the American SM-G977U and South Korean SM-G977N. European SM-G977F is stillhere to see, suggesting that this particular version is not far into the development process as the three most important.
There is a great chance that the newly created model number belongs to the 5G variant on which the company is working, which again explains why there is still no European version. Compatibility between 5G networks will be a problem, which may be the reason why the euro phone is lagging behind. It or Samsung does not believe that local airlines will not expand 5G coverage soon enough.
Source (in Dutch)