Currently, the three active pre-order books, Waterdeep:Dragonheist, Waterdeep:Dungeon of the Mad Mage, and Guildmaster's Guide to Ravnica are NOT included in the current Legendary Bundle. The Legendary Bundle will be updated to include these when we're closer to the time of those books actually being released.
The Legendary Bundle was updated yesterday to include the Wayfinder's Guide to Eberron.
Does this include the two newest books "Guildmasters' Guide to Ravnica" and "Wayfinder's Guide to Eberron"?
Both of these had a reduced price for me, presumably because of my earlier Legendary Bundle purchase, so I think the answer is "yes".
The description of the LB has been updated to include WGTE, but I don't see Guildmasters Guide to Ravnica listed as a source there yet.
How do you get a one-armed goblin out of a tree?
Wave!
I don't believe that pre-orders have ever been included, but I could be wrong.
Currently, the three active pre-order books, Waterdeep:Dragonheist, Waterdeep:Dungeon of the Mad Mage, and Guildmaster's Guide to Ravnica are NOT included in the current Legendary Bundle. The Legendary Bundle will be updated to include these when we're closer to the time of those books actually being released.
The Legendary Bundle was updated yesterday to include the Wayfinder's Guide to Eberron.
I am the Inquisitor Imperitus. I am judge, jury, and executioner. Draw your last breath now, as I send you to the Nine Hells.