A Friend got that also, so did i.
Seems legit to me.
I hope the Devs (no matter if its Miranda, Pidgin, Trillian) will be able to hook into it. When they are not able, i think i will have to quit ICQ after around 20 Years of usage. We will see what will happen. When they change Protocol add not going to provide a API, there will be no Way to keep ICQ supported. Unless someone wants to Reverse Code Engineer the official Client and this is illegal.