Used to be an old adage about never buying the early launch of any new model vehicle till the bugs were identified and fixed in production. Appreciate that manufactuerers invest considerable effort in achieving vehicle quality standards and undertaking pre-launch testing however...... it still appears that BMW products have glitches which only transpire after launch. Original 1200GS, fuel pump controllers, rear differentials, etc being but a few of the character 'issues' which BMW progressively addressed.
Picking up on old adages, the Mark 3 GS (Hexhead) is probably the most sorted version of the 1200 and will, no doubt, be available at cracking prices when BMW want to move stock ahead of the new version or people trade in perfectly good, low mileage bikes for the latest WC toy.