Today's 10.2.5 PTR build, 52554, is a release candidate build. This means we're reaching the end of the Patch 10.2.5 testing cycle, but when will Patch 10.2.5 launch?
Looking at release candidate builds for past .5 patches we have the following trends:
In general, Release Candidate builds come out 2 weeks before the actual patch launch, however, since we have Christmas and New Year shortly coming shortly, we can likely expect this one to be on the longer end. This means we should expect Patch 10.2.5 to launch in early January.