Possible trend.
One thing I have noted from the last couple of lists along with the one from today is that some of the UK properties on the list seem to be in areas that are approaching saturation levels with IHG properties.
The previous two lists have had CP Heathrow on it - A new CP and HIX have recently opened and there is a new HI and SBS on the way.
The current lists have properties in Manchester and one in Edinburgh. A new CP, SBS and a Principal have recently joined the other IHG properties with an Indigo to follow next month and here in Edinburgh the two Principal properties are now online.