In CTP 5, I believe, when building the project, the CREATE ASSEMBLY FROM 'x.dll' autmatically built the required binary code to build the project WITHOUT having to do the manual create/script and then put in the project.
Why was this dropped from--not only 6 and 7--the RTM This seems like a step backward not forward. Any changes to the dll require performing an ALTER ASSEMBLY, script, and paste all over again.

Create Assembly--I know...I know
Saurabh_Mathur
Hi Kevin,
The main reason this was removed is due to the fact that the pathing for the assembly can not be relative pathing based on a user enlistment to source control which makes the use of the file path in the CREATE ASSEMBLY statement problematic in a team working environment.
We are aware of this issue and plan to address it in a future release.
Andrew