There wasn't. At least in Europe. But this time I think there will be some difference, because USA season got moved forward to accomodate two major tournaments happening in July and August, while in Europe Nationals usually happen in August in September, so July is still good time for Regionals.
Also, I don't know if kits will be shipped early enough to have Regionals in April in Europe. Last year I played in one in first half of May and the kit arrived literally during the event. I wouldn't risk scheduling a Regionals in Europe any earlier than this. SCs this year started here in February because we had no kits available earlier (and this is another reason to not have Regionals in April, I'm TOing a SC on April 3rd and I'm not 100% sure if this will be the final one in Poland or someone will have an even later date).