>Will command line still be available after the release of the official GUI?

Yes it will. As far as I know, there will be support for both in the future. Thus, you will have `monero-wallet-cli`, which is the command line wallet, and `monero-wallet-gui`, which will be the GUI wallet. 

>Will Monerod will be blended in similarly of what bitcoin core node/wallet is?

In the future yes, see the feature request opened [here](https://github.com/monero-project/monero-core/issues/390. For now, however, `monero-wallet-gui` will be a separate binary that has to run alongside `monerod`. However, the GUI has a progress bar that shows the syncing status of `monerod`. Thus, new users would only have to open monerod and let it sync. They can monitor the progress in `monero-wallet-gui`.

Note that `monero-wallet-gui` might not be the official naming, but I used it in this answer for convenience.