zcashd 5.7.0 deprecates fetch-params.sh and zcash-fetch-params and bundles zk-SNARK parameters immediately so they don’t must be downloaded or saved individually. 

Until it’s worthwhile to generate transactions utilizing the deprecated Sprout shielded pool, you may delete the parameter information saved in these directories to save lots of area, as they’re now not learn or utilized by zcashd. If you happen to do want to use the Sprout pool, you have to the sprout-groth16.params at present accessible for obtain right here.

Moreover, 5.7.0 studies new mempool metrics.  

All node operators, which embrace our mining and different ecosystem companions, ought to improve to this newest model as quickly as doable. Please notice that model 5.6.1 will expire on or round Wednesday, October 11.

Further modifications have been included on this launch. For technical particulars, please learn the total launch notes accessible at https://github.com/zcash/zcash/releases/tag/v5.7.0.