Here are the devices that are currently being updated to One UI 2.5

[Dilli]

• Samsung Galaxy A51
• Samsung Galaxy A71
• Samsung Galaxy Note 9
• Samsung Galaxy Note 10
• Samsung Galaxy Note 10 5G
• Samsung Galaxy Note 10 Lite
• Samsung Galaxy Note 10+
• Samsung Galaxy Note 10+ 5G
• Samsung Galaxy S9
• Samsung Galaxy S9+
• Samsung Galaxy S10
• Samsung Galaxy S10 5G
• Samsung Galaxy S10 Lite
• Samsung Galaxy S10+
• Samsung Galaxy S10e
• Samsung Galaxy S20
• Samsung Galaxy S20 5G
• Samsung Galaxy S20 Ultra
• Samsung Galaxy S20 Ultra
• Samsung Galaxy S20+
• Samsung Galaxy S20+ 5G
• Samsung Galaxy Tab S6
• Samsung Galaxy Tab S5e
• Samsung Galaxy Z Flip
• Samsung Galaxy Fold
• Samsung Galaxy Fold 5G

Note 9 users is 3rd on list so very soon its round the corner. 

One UI 2.5 is the last major update for the Galaxy S9 series. However, the 2018 flagships are expected to continue receiving security updates until early 2022.

What's new in One UI 2.5

Samsung first released One UI 2.5 on the Note 20. It bundles in updates to many of Samsung's core apps including the Notes app, wireless Samsung DeX, and Reminders. Notes become far more powerful, allowing users to bookmark sections of audio recordings and edit PDF documents. Samsung's also added syncing so that you can keep your notes in sync across all your devices.

DeX also becomes a lot more powerful with wireless DeX support. Now you can use any compatible smart TV and instantly create a larger workspace while using your Galaxy phone as a touchpad replacement.

Naturally, the camera gets a lot of focus here as well. Samsung has added a new Pro Video mode to the S20 line, allowing users to shoot in 8K24fps for what they call a cinematic look. It also allows users to control the mic direction, letting them pick up certain sounds while minimizing others.

One UI 2.5 also now lets third-party Android launchers use gesture navigation on Samsung devices. It's an issue that had long been resolved on Pixels, but it's nice to see Samsung getting round to it at last.

https://www.androidcentral.com/oneui-25-tracker-when-will-my-samsung-galaxy-be-updated

Source android central 

[monark19]

tomandjerry bhai 😅 mere pas note 9 hai abhi tak toh screen bigdi nhi hai complete chal rahi hai aur maine extended warranty karaya hai note 9 ka abhi tak expire nhi hui warranty toh agar 2.5 update mai screen bigde toh warranty mai problem solve ho sakhta hai kya?

[Dilli]

good bro. My phone too has no display issues and working extremely well but I have not taken any extended warranty so far.😜

[VasuKharb]

where did you get extended warranty? and for how much?

[monark19]

samsung.co.in main site
4000 but you should buy before your basic warranty expires.

[monark19]

yeah we are playing safer side 😛😛😛😜