The above internal doc it shows that Bell HTC One S users will be receiving a sweet Jelly Bean upgrade tomorrow. The short description says that OS 4.1 will bring “an improved and refined user experience.” Can’t argue with that… when midnight strikes make sure you check your device: Menu >> Settings >> About device >> Software update >> Update.
Update: We’ve been receiving tips that the Jelly Bean update is now available. In addition, this seems to available for Virgin Mobile devices too. Check your One S.