Not sure I subscribe to the idea that ST is "dead". The base editor is stable enough for day to day use ("dev" build be damned) and all the extra functionality (i.e. new features) is provided by plugins anyways.
ST could never see another update and would remain a competitive editor for daily use due to its plugin ecosystem.
No ST3 is not stable. I can choose between latest beta (3059) which often crash with 'plugin_host' so I have to restart, because none of the plugins works after that. Or I can choose 3062 which doesn't open sidebar tree sometimes, and have to restart multiple times... I think this update didn't fixed that, will see.
I use the latest betas (actually dev releases) for a year or so, and never had ANY crash ever.
I use several plugins: The Linter package + several linters, the GoSublime, JSON pretty printer, a couple of build setups for different languages, etc.
OS X of course, might be buggier in Linux. Then again I don't think Linux is a priority.
Neither do the Sublime Text developers; even the main release of Sublime Text 3 is listed as beta, and the download link on the front page of their website is still Sublime Text 2.
My point is that the "released" version has been abandoned. He's not supporting previous versions at all, you pay for access to an actual beta build, but if you happened to buy the full product you're SOL
I'm using the 3059 build and it doesn't change permissions of pre-existing files. And this build is supposed to solve that for the dev builds (I have to check it).
ST could never see another update and would remain a competitive editor for daily use due to its plugin ecosystem.