The scenery version has stayed the same at v1.0 - as per the RTMM Maintenance Log which is attached to the link in the date-(See:
http://return.mistymoorings.com/scenery/zipfiles/hollis_harbor/maintenance_log.php)
03.10.2019 V1.1 Patch added ... typo fixed on scenery page ... by Rod Jackson and Doug Linn
05.21.2019 added version.txt to /scenery ... jdl
06.15.2019 Added New ESxml
But there is also the 1.1 update at the bottom of Hollis Harbor.. as of 03.10.2019
but v2.0 was only the update to add the version.txt and ESxml file. (which will be needed later)
So really the actual scenery pieces are 1.1 as it sits now.. but from understanding a new easier Hollis will be updated shortly.
Clear as mud? - Not really, but lets just say for now that there is an updated Hollis Harbor coming which will be much clearer and much easier. (But it might be called Hollis Harbor version 2.1 ?)