Help me understand this interview invitation

[slaugh]

I received an interview invitation from Princeton today. My department is EE. The prof. who sent the email mentions that he and his colleagues are impressed by my credentials and they do Skype interviews with the shortlisted applicants to better understand the alignments of interests. 

At the end of the email he says that I may also be contacted by his other colleagues. 

do you think he is specifically interested in taking me as his student or he interviews me because he is part of the graduate admission committee? I am asking because I didn't mention his name on my sop, but I know that profs not mentioned in sop can contact you as well. I would like to know so that I can act accordingly during the interview 

Thanks 

[Eigen]

Sounds like a general email from the SC to me.