After installed QGIS 2.12 I don't have SAGA in Processing Toolbox anymore and I need it bad. Am I blind, can't find it or something went wrong? Any suggestions please? My OS is Win 7 64 bit.
I noticed this too, under Windows. I installed SAGA on it's own, then under Processing > Options > Providers > SAGA, I gave QGIS the path to the install folder, and presto. :)
You can always use SAGA on it's own, by the way, including through the command line, via
(Also, make sure you switched to "Advanced Interface" in your QGIS Processing window.)