Several 185's were mooted to go to northern connect services. These will most likely be blackpool-scarborough, calder valley and the Liv-warrington-mia services. The 185's will pretty much be operating where they already are, but with split or even shared useage, much as the voyager fleet was split when WC and XC "de-merged"
I would expect tpe operated 185's will be retained on middlesbrough, scarborough, cleethorpes routes with the AT300 inspired derivatives concentrated on the ECML and WCML workings. The 350's will also most likely go to northern connect or may be transferred to London Midland.
This is putely my observation tho, no basis on fact.
AND NO MENTION OF 442's!!!