OpenWRT has a pretty decent developer base and in general has always been very stable for me (I've been using many WRT54GLs and Foneras over the years). That said it seems off that they wouldn't have fixed heartbleed by now, it would be significant for the web administration interface - especially for people who make it accessible externally via the Internet.
If anybody wishes to contribute to OpenWRT, this talk from 30c3 should give you a good overview on the "current" state of the project (hint: apart from system programmers, web developers are also very much welcome/needed):
If anybody wishes to contribute to OpenWRT, this talk from 30c3 should give you a good overview on the "current" state of the project (hint: apart from system programmers, web developers are also very much welcome/needed):
https://www.youtube.com/watch?v=Y-OlUxeS57E