It seems that a new wave of McDonalds ponies are coming this March. Estaimted date is the 9th of March but this has yet to be officially confirmed. It is also expected that they are going to sell out quickly (since they sold so well a year ago) so you may want to keep an eye out at your local McDs and act quickly if you want them.
Also as we found out last year, most places offer a promotional set, meaning you can purchased the whole group at once. These are available to collectors, as there are people who of course collect McD toys, and of course people who are collecting specific things like My Little Pony or Transformers (also available as the boys toy). We’ll find out more information probably next month as the date draws closer.
Unfortunately this is only setup for the US McDonalds, other countries typically get them a month or two later (we’ll keep our ears open and let you kn0w).