I think it could bring back the same nostalgic feeling. It might explore the growth of the characters between the Christmas story and this summer one. There could be new relationships, new challenges, and of course, lots of funny moments. For example, if there were certain rivalries in the Christmas story, they could be rekindled or resolved in different ways during the summer. Also, the setting of summer will surely bring its own unique elements like outdoor activities and summer traditions into play.
Well, perhaps we can expect a continuation of the charm and humor from the original. Maybe it'll show the characters in a new light during the summer, with some wacky adventures just like in the Christmas - themed predecessor.