Xiaomi's Mi Band/Amazfit bands are probably the only good options left.

I had a Mi Band 1 for 2.5 years before it died, and I'm currently running a Mi Band 2. It has a 20 day battery life and has good third party app support.

From the Fitbit blog post on the topic, it looks like the effect will be nill for me. Can’t buy new apps? Don’t care. It appears that day to day use will continue uninterrupted, at least for me.

And this is why I didn't buy a Pebble. I'm basically not prepared to buy a smart watch at this point unless its software is open source. Otherwise you're completely at the mercy of the company's (mis)fortunes.

Incidentally, as I write this I'm wearing the first watch I purchased for myself ~20 years ago. It's still running strong with zero maintenance. On the other hand (wrist?) both my smartwatches have been consigned to the drawer of random curiosities.

Buttons are important for me, especially when a touch screen would be inefficient when wearing gloves in the harsh cold winter climate of Canada.

And the display, while not flashly as an LCD, enabled the battery life, which to me is more important.

Check out http://rebble.io/ - it's made by some ex-Pebblers and other Pebble fans to keep your watches running.