I travelled into Oxford today from Bicester by the rail replacement bus and was informed that, with effect from Monday 9th March, the RRB bus stop at Bicester Town will relocate to the existing stop on Pingle Drive opposite Bicester Village. The rest of the station site is being cleared which means the the bus stop needs to be relocated for the time being. I believe this is the same stop used by the shuttle bus from/to Bicester North.
At the moment there is no pedestrian access from the current Bicester Town bus stop in Station Approach to Bicester Village due to the building works. To get to Bicester Village / Pingle Drive bus stop on foot is probably about 20 minutes walk (its been a while since I have walked that way so I can't remember exactly). The recommended walking route from Station Approach is along London Road towards the town centre, through the Market Square, along the Causeway, down Church Lane passing the library in Old Place Yard then continuing on the footpath across Pingle Field towards Bicester Village.
Interestingly my rail ticket to Oxford today was issued from/to Bicester Village (not Bicester Town!) I hope this is just temporary to reflect the relocated bus stop and not a permanent change of name. The temporary bus stop relocation will be less convenient for many residents but will no doubt please the visitors to Bicester Village.