Voting starts in March for the Drupal Association Board election.
Somewhere between beta3 and rc1 the ability to put exposed forms into their own block's disappeared for content panes.
1) Install clean site, enable Views and Content panes
2) Create a new page display. Note the option "Exposed form in block" being available.
3) Create a new pane (or context) display. Note the same option now missing.
I tried with both stable and -dev of ctools aswell.
Assigning directly to dereine as I can't figure it out and it's a D7 issue.
If I can figure git-bisect out I'll pin-point the commit later.