Avid released Pro Tools 2019.10 the other day which includes the Dolby Audio Bridge which makes it even more capable for producing Dolby Atmos mixes. Along with this release Netflix have updated their recommendation for Dolby Atmos mixes, including that while there are minimum requirements for mixes, Dolby Certification is not required for Home Atmos mix rooms. They also recommend the use of the Dolby Atmos Room Design Tool for configuring your mix room for Atmos. Details can be found in the following article from the Production Expert website: