Let me outline the process:
Scripter changes code (fixes bug, adds feature, etc...)
Scripter 'sends' updated code to developers
Developers review changes and ensure they are not malicious
Developers push the new code live
Due to this multi-stage process, updates can take a while to process - this is probably what you're experiencing.
Hopefully that cleared things up, if you're still unsure or have any further questions, let me know!
All the best
Apa