You can now link to projects using @mention and establish connections between projects in your workspace.
Here's how to crosslink:
1) Create a task that you want to crosslink another project. Make sure to know the name of the project you want to crosslink!
2) Select the task you want to crosslink.
3) Simply use the "@" function and type in the name of the project you wish to crosslink.
4) The project is now cross-linked! Clicking on the cross-link will bring you directly to the project.