Can I blissfully go on writing OS X and iOS apps in Objective-C (I spent 15+ years training brain cells in Obj-C)? Aaron H. seems to suggest I can -- Apple isn't just pong to deprecate the entire language one morning in early June I hope. I have learned just enough Swift to read it, but not ready to invest the time to learn it well.
You're definitely safe writing your own apps in it for well into the foreseeable future — there's not only way too much app code out there for it to be deprecated soon, but the vast majority of the system and bundled apps are in Objective-C.
I'd expect Objective-C jobs, though, to decline in number over time as Swift jobs rise. If you're doing it professionally, not learning Swift is going to increasingly limit your options, perhaps pretty rapidly — a few months ago, I got turned down for a job in part because of lack of Swift experience. Ended up landing a different job where we're writing a Swift app and step 1 for everyone on the team was "learn Swift".
However, as those Objective-C jobs decline their pay-scale will probably increase as companies desperately attempt to find someone to maintain their legacy apps.
