When will it be possible to link outside financial accounts to TurboTax to automatically import available forms or information?

There is no Automatic import of financial forms into TurboTax.  You have to initiate the import.

See this TurboTax support FAQ for importing Forms 1099 - https://ttlc.intuit.com/community/entering-importing/help/how-do-i-import-my-1099/01/26254

There is now.