The Jenkins 2.0 overview page has screenshots and details: <a href="https:&#x2F;&#x2F;jenkins.io&#x2F;2.0&#x2F;" rel="nofollow">https:&#x2F;&#x2F;jenkins.io&#x2F;2.0&#x2F;</a><p>It also explicitly mentions backwards compatibility:<p>&gt; Jenkins 2 is a drop-in replacement of the Jenkins 1.x series of releases and fully backward compatible. There is practically no reason not to upgrade!