They invited 26628 applications, they will receive all application and put in process immediately but the visa for those from 20001 and later will not be finalized till next year if all cap for this year is reached. Rather inviting those next year they invite all this year but will issue visa on order of receipt of EOI. Some people may see that their processing is slower than others as they maybe in for quota next year.There are only 20,000 spots available. They have asked for about 26,600 applications meaning they EXPECT that no more than 20,000 eligible people will make the cut or even apply. But there is no official assurance that all those in the 20,001 to 26,600 category will be approved. Highly likely but no guarantee.