A minor update is on the docket for the T-Mobile HTC One S starting tomorrow, May 31st. Th 24MB patch will bring bug fixes and improvements including WiFi calling enhancements, better camera stability, and resolved signal fluctuation. The update leaves the One S at software version 1.84.531.2. More info and the particulars on the update process can be found at the TMo source link below.
[T-Mobile via AndroidPolice]