The Investor, a division of the Korea Herald, has reported that 3 SKUs of the Samsung Galaxy S10 are now being manufactured. This information has apparently come from a source exclusive to the outlet. The S10 units being made now are all of the 4G variety, apparently.
https://www.notebookcheck.net/Samsung-Galaxy-S10-production-lines-are-reportedly-now-open.402026.0.html