I personally don't think the old version is going to retire all too soon. Top 11 2017 does still have some quirks that need fixing as Niko mentioned, and the game is causing some issues for some players.

I am glad the old version is still active though because there are users out there who's machines are, well, ancient and can't run the new versions of Top 11.

Eventually though... one day, the old Top 11 will most likely be sent off and rest in piece.