freetype 2.3.1 - any problems anticipated?

freetype 2.3.1 is available. [1] I think I might update to it. Someone has provided me with an updated portfile already. Only, there were massive problems, as I recall, when someone tried to update to freetype 2.2.1 and we had to revert to 2.1.10. Does anyone remember what the problems were at that time, and know whether or not we will have those problems now with 2.3.1? [1] In fact, 2.3.2 is available, but it produces errors during configuration/compilation which 2.3.1 does not, so I am inclined to upgrade only to 2.3.1 for now, if at all.