An update on what will happen to stack requests once the new library system comes in:
Stack requests already called up to libraries
These will remain on reserve in the reading rooms until Monday 1st August. This should give you time to renew your stack books on SOLO to keep for longer if you so require, otherwise any books you currently have called up will be returned to the stack from that date.
New stack requests
Assuming all goes well with the last few bits of the implementation over the next couple of days, you should be able to start ordering books from the stacks again from 9am on Friday 22nd July. Stack requests, like all other library functions, will now be placed via SOLO. See the SOLO online guide for information on how to do this.