This release is still lacking functionality that was available in 0.6 so do not download it if you require grasshopper professionally and/or do not know/want to know how to revert to previous versions.
maybe it is solved already...but when i baked it didnt work the group function.
sorry i dont know which 0.7 version i have (at the office, i mean), i will check it out on monday.
but just wanted to help
:)