Would be nicer to provide an actual link.
Software versions & updates: Samsung Galaxy... | T-Mobile Support
Also, why not title the thread properly?
Software versions & updates: Samsung Galaxy S 5
and then provide a synopsis of what it is about.
Beginning
June 19 after 5 p.m. PST the Samsung Galaxy S 5 will have a software update to Android 4.4.2/Baseband G900TUVU1BNF6 that turn on VoLTE services via OTA over Wi-Fi in available VoLTE markets only. For devices not in VoLTE markets, the update will be available via Kies starting June 20. VoLTE capabilities are limited to markets that have had VoLTE turned on.This update provides features and improvements: