Please see the snapshot of a five page letter sent to Solihull Planners by Highways England.
It is clear Highways England still have problems with the application near Junction 4 and they have asked that the council do not consider the application for another month from the date of the letter.
I doubt very much the necessary reports will be ready in time for the planned date to consider both this one and the other one (near junction 5/6) set for 19 June.
I will update you when I hear more but I deduce that the application for Junction 4 has so many problems, many involving safety, that this one will fail.