Elizabeth Line (CrossRail) opened 24th May 2022

It is worth noting that GWR do run a handful of overnight semi-fast services between Paddington and Reading so there would be some precedent if TfL thought it worthwhile to run a night Elizabeth line service west of Paddington.

Unrelated, but here's something I was thinking about recently: With the latest proposal to simultaneously link Shenfield and Reading/Heathrow to the central core (albeit with no through running from Shenfield to west of Paddington) using existing service patterns to decouple the transition from being forced to happen during a May/December timetable change, would there still need to be changes made to the current TfL Rail timetables, either in Dec 2021 or May 2022, in order to better line up existing service patterns to the proposed Stage 5b timetable?
For example, if the proposal was to run an even 8tph to each of Shenfield and Abbey Wood off-peak (to line up with existing service levels on the Shenfield line) then the current 6tph off-peak west of Paddington would need to be shifted from their current gaps of 11/5/14 mins to something like 8/7/15 mins so that when they eventually get diverted into the core they would line up nicely with the Abbey Wood service.

In BR days there was only a two hour gap between the last and first Shenfield stoppers (roughly 1:20 and 3:20)

To reply to the replies I've received, I didn't consider all-the-way services due to projected demand. Regarding freight, I suppose Hayes & Harlington to Stratford may be the best alternative, with complimentary night bus connections from Newbury Park on the Central line. Then again I'm not very familiar with everything so feel free to keep this going.

Maidenhead is kind of like a gamble for patronage due to distance and is two stops from Reading. So the next best is Slough other than Hayes & Harlington.

The fact that there are overnight trains as far as Reading suggests there's demand, albeit not high demand.

Making the case for Slough, it's the western extremity of the TfL Bus network so is a place served prior to TfL Rail and therefore a place where TfL would logically serve (even though it's outside the M25).

However, when there are overnight works on the main lines (which was reasonably commonplace when I commuted) everything had to be sent along the relief lines, and there is no possibility to reverse a train without interrupting through traffic. However, at Maidenhead there are stabling and reversing sidings which were provided specifically for Crossrail!
I would ignore the temptation to say "Maidenhead's only two stops from Reading". Whilst that's true, it's not half-way between Slough and Reading. Maidenhead is 24.25 miles from London, whereas Reading is 36!

Yes they are for both sides. It’s been a regular feature for TFL Rail West weekend running for a number of years. Less so on TFL Rail East of late but both retain coverage in the event of disruption.

On the digital announcements on the new Greater Anglia class 720 trains, the message to change to the Elizabeth line at Shenfield has been replaced by TFL Rail.

Given that changing to the Elizabeth line at Shenfield won't be an option for some time accuracy is the thing to go for.

Photos posted on Facebook over the past week show that the remaining parts of Whitechapel are being readied for handover to London Underground on Monday 23 August 2021. This includes returning large parts of the station previously behind hoardings back to public use in much the same way as Liverpool Street/Moorgate.

The temporary ticket hall on Court Street will close permanently upon the re-opening of the rebuilt Whitechapel Road ticket hall (closed since 2015) which will be supplemented by an additional permanent entrance on Durward Street. Step-free access will be available between all active areas from the same date.

This Saturday and Sunday 21/22 the District line has no service between Tower Hill and West Ham , Hammersmith and City Line no service on the whole line. London Overground no service between Highbury & Islington and Shadwell. Plus on Sunday is the London Big Half Marathon. Monday will tell if anything has changed to the entrances to Whitechapel Station.

As far as I could tell, the only thing that needs to be done to open the main (Whitechapel High Street) entrance would be to take the hoardings down and perhaps a bit of tidying up - way less than a two day job.

Update

Obviously signage will need to change before Monday morning, and obviously all the rest will need to be done at some point but it it all required before the entrance can open?

Druids predictions were on the money:

If anyone is in the area can you take a photo of the lift map so I can figure out my route through the station please.