Need the ability to compare system date against the release date (based on the fixversion)

[shivamdu]

I am working on a workflow which requires the ability to include additional approvals based on a date comparison, meaning if the current date is greater than Release date - 7 then I need to add additional approval flow. 

In the current world fixversion attributes (release start date, release date) is not accessible from the workflow conditions/validators.

Any help is greatly appreciated.