Pokemon GO has a new Nearby tracker in beta-testing, coming soon to players worldwide

Should the animal disappear before you manage to throw your pokeball at it, you will get a notification to stop you from trecking only to come out empty-handed. The tracker is limited to a maximum distance of 500 metres, though.
Hopefully, players will find the Nearby feature superior to the one that was available before, only to be removed by Niantic together with the expulsion of third-party tracking methods. It's good gameplay design to know the possible Pokemon locations, but still proceed with the hunting action. If the test succeeds, it probably won't take too long before the new Nearby functionality is available to all Pokemon GO players.
source: Reddit via Touch Arcade
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