Integrate release announcement

As mentioned in an internal room, we've discussed having a 'release announcement'...

Option
Pro's
Con's

Full screen takeover, right hand side:

- Space for more content
- Must be dismissed/hard to miss

- New build that's not aligned with current company strategy
-

Top-left toasts:

- Already exists
- Copy kept to a minimum (less to translate) and can link to a blog post

- Easier to miss

Specific tool tips:

- Specific content will make the new UI easier to learn

- specific for each release (hard to repeat)
- New build that's not aligned with current company strategy

## Open questions
- Where does the data come from?