Overall, I think Maps 3.0 is a good improvement over Maps 2.0. A few kinks are still noticeable, but otherwise great program.

I have the Nokia E71-1 (04) (FW 210.21.006 - 02-03-2009). I use Nokia Maps 3.0 Release Candidate with Drive Europe License. Both in German (so descriptions of menu names below may vary).

Pros:
- Better search functionality
- more view options with Drive & Walk
- 3D Buildings

Cons:
- I still miss a good integration with Calendar (I always enter street and city in the address field for external appointments. I wish I could simply highlight the address in an appointment and Maps would open up to direct me to the appointment's location).
- There is (some) integration with Contacts. But only if you open up Maps to search for you contacts (go to Options > Address > Options > Select from Contacts). You cannot select a name in your contacts list and then have Maps open up with the contact's location.

Issues I assume will be fixed by the time the final app comes around:
- Often takes 10-15 tries to close the app. Selecting Options > Close > Yes does not do anything.
- Had to install Maps 3.0 twice. First time it crashed every time I opened up the search menu.

So, please dear Nokia developers, work on a better integration of your products with each other. The above also applies to integration between contacts and calendar (ability to connect an appointment with a calendar is missing; entering a birthday as contact detail does not create an entry in the calendar; showing all the conversations with only one specific contact (text, email, ...; maybe similar to Palm Pre's new all-in-one search features).

Thank you!