Thanks for following it up with MP. It will help others too like last time few of you enquired with them in Mar-Apr and we got test invites from May-Jun-Jul. Not sure if its coincidence but will see.
Its possible that they contacted the office since they corrected the earlier statement. Also the interview step matches with the next processing step for
@rafzy ('s urgent case). Even for him its interview after the test.
Yes, seems to be another step unnecessarily and that will expand more wide gap for oath date(unless windsor has short duration oath dates). I hope that they will send out interview invites in a month.
Possibly we all are looking at passport pages request too(before the interview). Hopefully they request it before interview instead of wasting again few more days or weeks.
But it also depends on the officer if he/she wants the interview. So we can only hope that our officer wont ask for it. Even passport pages request would be faster than interview. Will see if they are going to delay with interview.