keep someone posted

US /kiːp ˈsʌm.wʌn ˈpoʊ.stɪd/
UK /kiːp ˈsʌm.wʌn ˈpoʊ.stɪd/
"keep someone posted" picture
1.

to regularly give someone the most recent information about something

:
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Please keep me posted on your progress with the project.
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I'll keep you posted if anything changes.
:
postpost-itkeep someone/something at baykeep someone at arm's lengthkeepkeep onkeep to