Need help with understanding a sentence

[Athosss]

I just heard back from a professor that I emailed to tell him about my interest in his line of work. He told me this:

"G

lad to hear you applied. I think that our admissions period for this year might have ended,

good luck with the admissions process."

Does this mean that they have accepted all or most of the students they want? Or it simply means that the application submission has ended. English is not my first language and I just want to make sure that I'm not misunderstanding it.

[PsyDuck90]

Yeah, programs typically take applications during a certain time period. For PhD, it typically is from September to December or January. They then select students based on the applicant pool.