Times for the December timetable change have started appearing in systems. I have not conducted a detailed analysis, largely as it is easier to do from a paper timetable, but as far as I can see there is no change to Barton services.
TPE services from Cleethorpes are all timed to depart 2 minutes earlier than previously, with the journey time from Barnetby to Scunthorpe increased by 2 minutes. The exception to this is the current off pattern 17:23 Cleethorpes - Manchester Airport, which is retimed to 17:24 to fit the hourly interval clockface timetable.
Similarly, the Lincoln/Newark and Saturday Brigg trains are retimed 2 minutes earlier with the extra 2 minutes going into the journey time between Barnetby and Market Rasen / Brigg.
There are currently guage enhancement works at Barnetby, closing platforms 2 and 3, thus requiring westbound trains to cross from the fast to slow line for the next couple of months. This could well explain the slight increase in journey times.