Yes, a new year is approaching with alarming speed, as every year since we imported the municipal administrative boundaries we will update them on the 1.1. or soon after. I've prepared (again as always) a list to facilitate splitting the work up:  https://wiki.openstreetmap.org/wiki/Switzerland/2019_Municipality_Mergers

Notes:

• the list was based on information from the BfS from September 20th, it has been known (in 2017 for example)  for a last minute update to turn up
• what exactly is happening in Kallnach seems to be unclear, does anybody local know? Otherwise I suspect that there will be a last minute update, see above :-)
• the number of changes is very low this year, please do not commit any changes before the 1st of January, the work can easily be done in an hour.