Hi,
I am planning 2.6.4-pl1. It would contain fixes for:
#1287611 no save button in relation view (testing finished)
#1290730 no https export under IE (some tests still to do and some feedback to be received)
Those 2 bugs represent a loss of functionnality in 2.6.4.
If someone thinks that other critical fixes should go into 2.6.4-pl1, just say it :)
Marc