You did not get an ITA yet. There is still time to receive it. If your profile is newer than July 2017, however, you will not receive an ITA because you do not meet the cutoff date. The profiles that are in the pool from 2017 that were selected today are likely profiles that have been updated with improved scores-- for example, more work experience, new degrees, improved language scores, etc. They have creation dates from early 2017 and initially had lower scores, but they have improved their scores since then. It does not matter how many people were in the pool when you submitted your application, only how many were in it when the draw occurred.