Definitely master, a lot of work has been done in the year(!) since the preview.
> On 2 Oct 2015, at 12:14, Ying Bian <yb...@me.com> wrote: > > OK. I think I would stay on master. Thanks, > > -Ying > >> On Oct 2, 2015, at 18:43, Alexander Shorin <kxe...@gmail.com> wrote: >> >> Hi, >> >> They are mostly identical, except master evolves faster while >> developer-preview is always a bit outdated. >> -- >> ,,,^..^,,, >> >> >>> On Fri, Oct 2, 2015 at 1:39 PM, Ying Bian <yb...@me.com> wrote: >>> I want to try out couchdb 2.0 in my new product. Which branch should I use? >>> I see the version on both branches are set to 2.0.0. >>> What’s the difference? >>> >>> -Ying >