Billboard just released an interview with Spice Girl Mel B. and in it she comes the closest any of the girls have gotten to actually confirming a 2016 Spice Girls reunion.
On the possibility of a 2016 reunion:
"Potentially, yeah. Once we sort everything out we make an announcement, but right now we're just figuring it all out. Next year is your 20 anniversary so we're really just trying to make sure something happens."
On her children being aware of the tour:
"They know we're possibly going on tour next year so they get to meet all the other girls. So it's lovely."