This PCB is compatible with all Sonnet years. Building the Sonnet with a solder PCB will require additional tools (a soldering iron) to install switches. However, it enables additional layouts. 

The hotswap PCB (ANSI only) doesn't require any additional tools and allows you to change switches on the fly. However, you will only be able to use certain layouts and a full plate.

Both hotswap and solder PCBs are wired-only.