T Mobile just released Android 5.1 update documents for its Nexus 4, 5 and 7 and the actual OTA may rollout today. The new LMY47D build was already spotted online, but now it appears that T Mobile’s documents show a possible rollout today for its older Nexus devices.
Android 5.1 brings about bug fixes and stability and some new features as well. Even if the rollout is not coming exactly today, it will come around soon and we will let you know when.
Source: T Mobile