I'm personally not a huge fan of Swagger, however I don't think you have to worry. Since 2012, there's only been two new versions. It's not exactly a fast-moving spec that will be out of date in a few weeks.

I do believe that Swagger 3 (and the rename) will splinter the community, however I think fixing some of the fundamental issues with Swagger (many of which are enumerated in the blog post) is very important.