Do you think Larian will fulfill all of the above? Probably not. If they do they may fulfill them in a different way than people think or was originally intended.
Will some things be left out and incomplete? I think we will have all of the classes and races promised. Given how much Larian seems to want to do the Baldur's Gate franchise justice and make this a big deal - I wouldn't be surprised if we get some surprise classes, races or subclasses. As far as overall features? I'm sure most will be in and some will be missing.
Will the release date be pushed further back than 2023? This would be both shocking and a disaster for Larian. I know a lot of people are predicting early 2023, but I am predicting late 2023. The more I think about it, the more I think Larian is going to want to dodge the loaded early part of 2023. Hogwarts Legacy, Resident Evil 4, Starfield and the likely release of Cyberpunk 2077 - Phantom Liberty. Those are some major, major releases seemingly slated for the first half of 2023. I think Larian is patient, keeps polishing and releases later in 2023.
Will we get another patch this year? Almost 100%.
Will we hear anything from Larian officially? There will be another Panel From Hell this year.