https://bugs.winehq.org/show_bug.cgi?id=43756
--- Comment #3 from Fincer fincer89@hotmail.com --- Adobe hasn't made getting a free trial an easy task. There is a free 7 day trial available for Photoshop CC 2017, according to Adobe's website. As far as I am aware of, Photoshop CC 2015 trial is not available anymore.
In general, The 7 day limit may be just too short for Wine part (debugging, implementing stuff etc).
There are two methods that come to my mind (how to get a trial), and they are as follows:
NOTE: I haven't tested these methods for a long time so the instructions may vary little bit.
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Method 1) Adobe way
1) Create a Creative Cloud account (membership) here: https://accounts.adobe.com/
2) Download a downloader executable (1.8 MiB in size) from here:
https://creative.adobe.com/products/download/photoshop
NOTE: Downloading the downloader requires that you use either a Windows OS or simply fake your web browser's user agent so that it indicates you're using Windows OS. Otherwise, you can't download the downloader on Linux.
3) Download Photoshop with the downloader on Windows OS (I couldn't get the downloader work on Wine 2.17)
3) Install the main program on Wine and sign in with your account to access the program.
Adobe Free Trials website (with instructions) here: http://www.adobe.com/products/photoshop/free-trial-download.html
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Method 2) Unofficial way
1) Get Photoshop CC 2017 offline installer from some unofficial source
2) Create a Creative Cloud account
3) Sign in with your Creative Cloud account to access program for 7 days