The Algo swap (Core v7.1.0) was planned for springtime 2018 but it could come a little more later i think.
However for personal mining consideration i'd like it to come after summer, and not before !
In fact, also a core wallet 6.15 was originally planned for December 2017 but i presume that the pump and their others projects (DGB Foundation, new exchanges listing, soft improvements, etc) have delayed this release. Now it's about to be released as 6.16 as you can see on tweeter. So i guess we'll have to wait a bit more for the hard fork.