Yeah, Maiden as a business is planned years and years in advance. Steve, Bruce and Adrian have their various solo projects that need to be worked around Maidens schedule.
The logistics in everything Maiden do takes time so can't be thrown together last minute. If you're going on tour for example you need to sell tickets about a year in advance, so planning routes, booking venues, transportation, crew, having staging/props made up all has to be done even earlier than that.
We've just started 2026, so any 2028 touring is likely already in the early planning stages.
2027 isn't going to be a year of sitting on their hands. I reckon a few months in the studio and some time for solo projects makes sense.