First, let me say that I'm glad that Adobe included HDR & Panorama Merge in LR6 CC. Don't have to use a plug-in for these functions. However, in the SlideShow Module, when creating an Intro and an Ending Screen, I cannot create a multi-line text, only single line text. I have to use Photoshop or Elements 13 to create these screens, and then import back in to LR. Also, the Intro & Ending screens do not appear in the Preview Panel to verify the text, layout, etc. This should be possible to do in LR. A thought for future development in LR.
This is bug has existed for at least 4 years; you can enter multiple lines on Mac but not on Windows. Please add your vote and opinion to this bug report in the official Adobe feedback forum: Lightroom: Issue adding line-wrap to text using identity plate in Print module.