The bitcoin core shopper1 model quantity is similar because the bitcoin core server2 model quantity.
The model numbering scheme is defined at https://bitcoincore.org/en/lifecycle/#versioning
So it relies upon what bugs are discovered, if any, that must be fastened throughout the main model launch cycle.
1. bitcoin-qt for those who misuse client-server terminology for peer-to-peer topology.
2. bitcoind ditto however notice that bitcoin-qt is not a shopper for bitcoind at current.
