Pre-purchase Shadowlands

[Perl-anetheron (Perl)]

There’s a pretty comprehensive reply from a Blue here:

Upgrading Your Version of Shadowlands

To answer some questions in regards to the Collector’s Edition and its content: In the coming months, we will announce our retail-only Collector’s Edition to commemorate the release of Shadowlands, featuring everything in the Epic Edition, and more! – We have seen some questions about how upgrades will work for the different versions of Shadowlands. While the process is similar to the last expansion, we want to take a moment to clarify how upgrades will work for some of the most common situat…