i didn't get one ui 3 update in my s10 plus

[HR786]

When will get it 

[YatinAngara]

Ota updates roll out gradually to all users. It may not take long to reach your phone too.

[SiddharthShah]

i got few hours back

[rccgbjb]

even i have also not got

[Ehsank]

very soon...

[siddartha73]

even i have also not got..i purchased in hong kong

[Kinshuk05]

Try via smart switch on your pc. It should be there.