The other thing that comes in on that date is the requirement of .25khz spacing on your radio if you want to fly about FL190 in the airways. We are going to have to get ours changed over.
Another fantastic advantage of having the base of high level airways lowered to F195 is that you will be able to get a more direct routing. The base of high level airways in mainland Europe has consistently been F195 for a long time now.
i.e. flying from the UK to France at FL200 or above will give you a MUCH more direct routing especially in France.