Testing did as far as I know take place as planned in mid September. CAT I was supposed to be restored mid to late September and CAT III by mid October.
This didn't happen as the NOTAM issued late September stated US until end of October. Clearly there were problems with the new ILS.
An update by way of an ATOI was to have been issued by 16 October. It wasn't. One has been issued today indicating ILS will be back at CAT I in the week commencing 2 November. We will see.
Safety would not be an issue as the CAA would not have certified it until it met all the relevant tests. What is relevant and what I think the first poster on this topic was implying is that once again the program has been running late for reasons which are unknown
Also few more ATOI's were issued today for various taxiways in particular Mike which is to be diverted for 11 weeks and stands 26 28 200 201 and 202 closed.