When I launched ST 3 build 3118 x64 in win10x64 today
I got "A New version of Sublime Text is available, download now? " in order to update to build 3119.
But, unfortunately, clicking “Download” shows “No update available”.
After that, clicking Help|‘Check for updates’ I get “No update available”.
The above (the prompt to update) reappears every time I launch ST3, but then there’s always “No update available”.