I am 100% certain Gabi will be there and 99,99% Caio will be there as well. It's their last year as juniors and the federation wants to give them as many chances to compete as possible, so after these two IBU Cups they're going back in the IBU Junior Cup (Pokljuka) and then on to the JYWCH
In between they'll very likely be in the Junior Open European Championships in Nove Mesto as well.