Ok so perhaps not a native version, but just for the record of anyone else that is an avid Linux user... RSD and all of the recent additions from CC software work out-of-the-box under Wine. Such as Menu Builder, Web Form Builder, RLM, RED, etc.
Just for info:
Linux Mint 17 (Ubuntu derivative)
Wine 1.6.2 (Currently configured as Windows XP for other programs I have installed. Works fine.)

Just double click any of the installers (assuming you have .exe files to default to wine. Otherwise -> wine whatever.exe)
and it will launch including the nice custom borderless splash screens. Auto-installs anything missing (like Microsoft Visual C or what have you), and done. Works perfectly. I've tried about everything I can think of so far as elements, scripts, etc. that might cause issues. None found.

I dumped my 'Sites' directory over where I have all of my projects and exports saved.... it was seamless. My original workflow is exactly the same, I'm just under Linux now. Which is awesome because that is where I primarily operate and this just really cut my flip-flop time. We're talking by 60% probably.

I guess I had just gotten so used to things not quite completely working under Linux when it comes to design software, etc. that I just hadn't messed with testing until I got some free time recently. Man is this awesome. So another Kudo to the CC team for some consistent code crunching that is obviously universal at its core. Otherwise there would be some formatting and display variances, of which I have found NONE.

THANK YOU!
- John

I just want to reiterate what John said, although I can only talk for RED so far. Installed on Linux Mint 17.3 with Wine 1.6.2 (as Windows 7) and PlayOnLinux 4.2.2 without hassle, runs and behaves like on native WIndows. Good job!

Yes it is a shame that program does not just offer their software under linux. Linux needs less maintenance than windows.

I have big problems running Site Designer 4 Trial :-(
It installs but crashes right after launch. :-(
Any tips for dependencies I should install ?

Hi DBug,

Try checking settings in your Anti Virus first. If that doesn't work try running the install as administrator.

What operating system are you trying to install on?

He is running Linux.

Oh.... damn yea doesn't work on Linux... go fish.