This is a major release that will re-enable name service functions at block height 980,000, including name registration, extension, transfer and delete. Name registration now costs a fee (10 NKN) and is valid only for a year to avoid spamming attacks.
Please update your node BEFORE block height 980,000 (around March 7th, 2020). Old version will not be able to parse new name service transactions and thus will fail to work after block height 980,000.