Possibly concerning to me as I mentioned earlier, especially when you take it alongside the joint letter to the Prime Minister from all the local councils. If there was already broad agreement between Universal and the government perhaps all that was required any this stage of the process would be sorting through the details, dotting the Is crossing the Ts sort of thing. In which case there would be no need for local stakeholders to push publicly for the government to get on with the job. So it might be that there is a stumbling block, which I'd guess is the several hundreds of million points of taxpayer money that Universal want the government to commit to transport infrastructure, and Yasin and the local councils are getting worried that despite massive local support the project could fall at the last hurdle. Alternatively, it's a timetabling issue, and the new government has not yet addressed the project as quickly as Universal and the local councils would like as they have bigger priorities being in office for just a couple of weeks. So specific things like the timetable for Wixams train station as well as Universal's overall construction ambitions could become threatened, hence the two letters urging the government to proceed.
On the other hand, everything is proceeding happily and the local politicians (of all parties) want to be seen to be supportive so they can bask in the glory of a major investment and take some of the credit for Universal coming to the UK. Unless we have any inside info from Universal or the government it's difficult to know which of these scenarios is likely.