Version 1.17 of the LaTeX extension has been released. The main improvement is support for rendering to LaTeX the new image caption syntax (e.g. [[caption>>image:...]] in XWiki Syntax 2.1). It also supports multiline.
Note that since captioned image syntax has been introduced in XWiki 14.1RC1, you need a version of XWiki greater than 14.1RC1 to have it working in the LaTeX extension. The LaTeX continues to work with XWiki 12.10+ though.
See the release notes for more details.
Enjoy!