Leap seconds are being abolished. The current rotation speed of the earth is very close to 24h/day and is changing very slowly, so it is not very likely there will be another leap second before they are abolished.
Leap minutes are not, realistically, going to happen. The proposed bound on DUTC is something like 100s, and that bound is not fixed. The reason for keeping a bound is to appease those who don’t want to give up on it, but in practice once leap seconds have been abolished the bound will be extended not enforced.
The nice thing is that you would have a static table of leap seconds, and would not need to poll a URL to check for new leap second data (as Astropy does, for example, on import!).
