starting with 2016.2 versions of IntelliJ-based IDEs we change build numbering scheme: previously we incremented build numbers baseline by 2 with each release branch but now build numbers are consistent with (unified) version numbers: versions YYYY.R.* will have build numbers YYR.* (see IJ Platform Docs for details). I.e. 2016.2 releases of all our IDEs will have build numbers 162.*.
So please use 'until-build="162.*"' in plugin.xml of your plugins targeting 2016.2 IDEs.