It is quite likely that the interview will not be in the near future.
There has been a thread on this subject Jan/Feb about the TC 'recruitment' process and I'm sure if you are in TC then you will be quite familiar with the current situation about the latest recruitment. I am not going to post about it here, pm me if you want more.
The next anticipated recruitment is November this year, but if you want to know more about that I'm sure details can be found via the search function.
Edited following teachers comment