I'm awaiting my 2015 LC and according to the guys at Bavarian in Centurion they don't expect the keyless option to arrive on the SA bound models, unless it is perhaps some ploy to try and convince me to take the bike now!
I do however believe (non-factually) that this option will have some sort of overriding key that you can utilise in the event of the key dropping into water etc, as to ensure it is failsafe.
The keyless option on any vehicle was always viewed as a waste of money in my books, that was until such time that I received my new car earlier this year with the keyless option fitted – it is insanely awesome and saves so much trouble of trying to find a remote etc – just ensure that it’s in one of your pockets and off you go.

Then lastly, I would be very surprised if they can retrofit fit it, anything is however possible these days