can I install Adobe Animate CC and keep Adobe Flash Professional CC 2015?
or Adobe Animate CC will overwrite Adobe Flash Professional CC 2015?
can I work with Adobe Animate CC and Adobe Flash Professional CC 2015 in the same computer?
Yes - you can keep both. When downloading Animate, under advanced, select keep previous version. I did this yesterday. Good thing I did. I am running both at the same time on a Mac. When I open the IDENTICAl file in each one, the line spacing as viewed on the screen and when published in Animate is quite different (in this case greater) than the spacing in CC 2015 - even though the spacing as shown in the Properties panel is the SAME for both. This could be a problem - I have a lot of CC 2015 files whose paragraphs are fine but would be altered in Animate.