So with the points / track disconnected, what is happening to the Bas - Reading services Monday to Friday? Are they using P7?
They do a small stage of the work each weekend, but P1/2 have been reconnected again each Monday morning so far.
For instance, the weekend before last they removed various redundant sets of S&C that previously provided the crossovers from the old platform loop (P8) across the down main line towards the Up Westbury, a route that was out of use since Easter, but the two sets of points were still in place with the rails cut either side. That's now plain line on the old alignment, they'll straighten it in due course, probably in conjunction with removal of the points and temporary route leading from P8 to the new down main.
(That's the short section of track that 'cuts the corner' of the country end of P8 - it comes out eventually if you, or others, weren't already aware...)
Some of the recent work has also involved installing the new points for platform 3, which don't go anywhere useful yet.