I already reported that the rumored new Lightroom 7 (or whatever they call it) will be announced during the Adobe Max conference that starts tomorrow. As you can see from the screenshot above taken from the conference's official website, in this keynote Adobe is expected to "unveil major innovation across the world’s best creative system including a new generation of Creative Cloud apps, services and assets."
The new version of Lightroom will also finally have RAW support for the popular Nikon D850 camera.
The current Adobe CC plan rates can be found here. You can get a free Lightroom trial on this page. The last three versions of Lightroom can be downloaded here (see also this link for more information). Adobe's website has also a dedicated page for Lightroom CC.