[Lazarus] GTK 3.0

[Erwin van den Bosch]

GTK 3.0 is now widely used in major Linux distributions. (ubuntu, mint) 
But the support in Lazarus for GTK 3 is still in alpha state.

Do we need GTK 3 in Lazarus? Or is GTK 2 good enough? Will Lazarus and 
applications build with Lazarus look better under GTK 3? (HiDPI support)

Is someone working on the LCL implementation of GTK 3?
How difficult is it to implement GTK 3?

Regards, Erwin