Festool upgraded the EHL65 planer to a plugit cird for the European market. I'm not sure whether they made any other changes, but if they did it might have required UL to look at they tool again. My understanding is UL certification is expensive, and guess that maybe Festool didn't sell as many of the original planers as they felt necessary to justify the cost. This is just a guess so take it with a grain of salt.
On the plus side if the newer version of the 65 is mostly the same as the older version, parts will probably remain available.