Any such information will certainly be marked 'Private - For Staff Use Only' or similar, and will also take place outside of Traffic Hours.
Whilst I'm sure such information will make it into the public domain, enthusiasts wishing to see the move should limit themselves to places which are publicly accessible such as over bridges, and not seek to access closed stations.
If such a move takes place (it does tend to move annually, but it seems very early for this to be the case.) it will be from Aldwych to Northfields in the first instance.