Guessing you mean this one?
Belfast-based UK broadband ISP Fibrus, which is currently deploying a 10Gbps capable Fibre-to-the-Premises (FTTP) network across parts of Northern Ireland and E
www.ispreview.co.uk
We don't know much about how Fibrus approach these things (i.e. what stage they're at when a location is announced for the future build), but usually there's a period of engineering surveys and the operator may also have to appoint contractors, secure permissions/permits etc., to help with some of the builds. As such, there can be a bit of a wait between an announcement and the start of a physical rollout.
Not to mention that all rollout plans should be considered tentative, until they actually take place.