JQuery 3.0: The Next Generations
blog.jquery.com
blog.jquery.com
So I strongly suggest changing the name. I don't like "legacy" as suggested in comments, maybe just reversing the names will be better -- "3.0" (fat version) and "3.0 Compact".
> use the jQuery-Compat 3.0.0 package. We recommend this version for most web sites, since it provides the best compatibility for all website visitors.
So the plan is to call the version that the majority of people will want something other than plain jQuery?...