Junichi Masuda announced, hidden at the end of the E3 Nintendo Treehouse discussion that a lot of people didn’t stick around for, that pokemon stored in Pokemon Home WILL NOT be able to be transferred to Sword/Shield if they are not a pokemon listed in the Galar Regional Dex. They have not said anything if this will be a temporary situation or permanent.
They did this under the pretense of wanting to focus on improving individual pokemon’s animations (despite none of the old pokemon shown so far displaying any new animations) and balancing online play (despite the fact they’ve banned pokemon in competitive settings before without excluding them from the games.)
This definitely means no National dex, but Sun/Moon lacked that too. More importantly this means you may not be able to use your favorites in Sword/Shield, or transfer your shinies. Pokemon that have been with you for 17 years will be stuck in Pokemon Home and unusable.
And since the transfer to Home is a one-way trip, you won’t be able to send them back to gen 7 to use there either.
Spread this like wildfire, because a LOT of people didn’t see it.