Version-specific issues for Mathematica 11.3 (other than bugs).
Mathematica 10 is the latest version of Wolfram Mathematica, released on 2018-03-8.
This tag is only for version-specific issues that depend on version 11.3 specifically, such as installation. If your question is about a feature that was introduced in version 11.3, tag it with that feature instead, not this tag.
For bugs, the tag should be bugs when community consensus is reached and a notice conforming to the guidelines in http://meta.mathematica.stackexchange.com/questions/1610/standard-header-for-bugs-tagged-posts-for-easy-searching/1611#1611 should be placed in the first line of the post.