New version Pokemon go 0.291.0 for Android is slowly appearing on the Google Play Store portal. For iPhone and iPad on iOS, this APK is available from the Apple App Store. So check in your app store Latest available version of Pokémon GO, or look how to download the gameif it's not there.
Pokemon GO 0.291.0 Update - Release Notes
Official game site declares this:
Minor bug fixes and performance improvements.
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