“Lightroom CC 2015.4 and Lightroom 6.4 are now available on Adobe.com. The goal of this release is to provide additional camera raw support, lens profile support and address bugs that were introduced in previous releases of Lightroom. This release also includes a new Boundary Warp feature for Creative Cloud members.”
ImageRights.com is a site/service offering Copyright claims assessments, copyright registrations with the United States Copyright Office (USCO) and now the NEW plugin for Lightroom allowing you to register your images with the USCO straight out of Lightroom via ImageRights new plugin.
If you haven’t already, check out, here’s their site: https://www.imagerights.com/
This is a very nice list of some of the “must” know tips when starting off with lightroom. This list is compiled by the people at Digital Camera World. Keep in mind that these tips are geared for use in Lightroom 6 and CC but most still apply to Lightroom 5, tho. Here’s the LINK.