Is there a great difference between the 2012 Edition and 2014 of the Switzerland Tour Book?
The new one is up to date with up to date prices, etc., the old one is 3 years out of date. The places won't have moved.
The transportation won't have moved but won't list the newest attractions...
Whenever we update our books from the last edition we post our updates online for free. If you are traveling under the 2012 book (which was researched in 2011) then there will have been changes since then. To see any changes that occurred to the 2014 edition you can go to our online store, click on the book (Switzerland) then scroll down to the bottom where you will see a hyperlink called UPDATES. The updates are broken up by region so you can read just the ones that pertain to your trip.
Keep in mind that we are in the process of researching the 2016 edition so there may be a few updates that pertain to 2014 edition also. It is always worth taking a look at the updates for any guidebook you purchase, just in case we have added something new to the region you are visiting. Bon Voyage!