CyanogenMod 13 ROM is now available for Galaxy S5.. The ROM comes with all expected features of Android 6.0 Marshmallow and many more.. With this ROM, you can tweak the dark ends of your device and explore some hidden features..

Download link for the ROM for Galaxy S5... depends on your variants.
G900I (kltedv).. http://23.94.12.54//kltedv/rel/
G900P (kltespr).. http://23.94.12.54//kltespr/rel/
G900R4 (klteusc).. http://23.94.12.54//klteusc/rel/%22
G900V (kltevzw).. http://23.94.12.54//kltevzw/rel/
G900* Unified-GSM.. http://23.94.12.54/klte/rel/cm-13.0-20151106-UNOFFICIAL-klte.zip

To install this ROM, you've to install TWRP Recovery on your Galaxy S5 smartphone
Once you've installed the custom recovery, then flash the ROM via recovery mode.
fULL installation guide here..

Credits goes to the developer, albinoman887. for further assistance, do let me know.

here's the image

The phone looks old tho
I think Phantom5 is better

Xhaka:
The phone looks old tho
I think Phantom5 is better

Galaxy S5 looks old to u? Funny..
it's only successor is S6 and S6 edge..

Mrguru:


Galaxy S5 looks old to u? Funny..
it's only successor is S6 and S6 edge..

Don't waste ur time replying the tecno paid troll.

Mrguru:

Galaxy S5 looks old to u? Funny.. it's only successor is S6 and S6 edge..

don't that marketer.

Mrguru:


Galaxy S5 looks old to u? Funny..
it's only successor is S6 and S6 edge..

Maybe, but i like the phantom5

Xhaka:

Maybe, but i like the phantom5

that crap phantom 5 won't sell. it's a flop of the yes trust me

Xhaka:

Maybe, but i like the phantom5

well, your choice, but don't compare galaxy devices with tecno phones...

Themonster:


that crap phantom 5 won't sell. it's a flop of the yes trust me

It isn't
Its selling fast

Xhaka:

It isn't
Its selling fast

tell that to the gods

Themonster:


tell that to the gods

Are you pained cos they are selling their phones?