For users still maintaining existing 2015 installations, the final planned update was released on (version 15.006.30527). Final Version : 15.006.30527.
Absolutely. Running an unpatched Acrobat Pro DC 2015 exposes you to known PDF exploits. The procedure above ensures you get the last, most stable version without paying for a Creative Cloud subscription. For users who refuse to move to subscription-based models, patching 2015 remains the best option. adobe acrobat pro dc 2015 update download fixed