Problem:

 I installed Update 2 for TFS but when I click board I don’t see the Kanban board I see the task board.

 Solution:

Click the board link at the top of the Backlog Page under the "Product Backlog" heading next to "stories".

Explanation:

The board link at the top left of the page between the backlog and work items links takes you to the task board.

But if you click the board link below the "Product Backlog" heading where you enter new User Stories it will take you to the Kanban board.