It would make sense that they may be putting the sale of Kingdom Halls on hold for the time being due to limited demand. I read this week that 50% of office space in Sydney CBD is currently vacant. There is discussion of rezoning to allow some to be sold off as residential. Since Kingdom Halls are built to suit commercial requirements, many would have fallen in value over the last 12 months.
It is likely Watchtower will still want to sell off more Kingdom Halls when the market turns. There has been little publisher growth, and with online meetings becoming normalised, I imagine some PIMI JWs will chose not to return to the Kingdom Hall in the future, particularly older ones. There is not going to be much need to increase the number of Kingdom Halls for some time. Hopefully, 2019 will be the year that holds the record for the most Kingdom Halls ever.