I doubt the issues, that need to be fixed for 0.7, will appear in the summer...maybe fall or later. There seems on intention (or more realisticly: no time due to other "normal" Mozilla priorites) by the Mozilla team to fix the MFCEmbedded problem with the SSL (see the Target Milstone "Future"). And the download dialog issue is also pulled back quite a while (I couldn't find it, but it was something like 1.1alpha)...
Some of our people are looking at those problems to see if they can be fixed on our end. I'm not sure those targets accurately reflect the priorities either. As you can see, those were reported sometime ago and when they were initially targeted, I don't think the severity of the problem was realized. Also, Mozilla has "customers" who use the embedded version of the browser who are going to need this corrected. We're not alone with this problem. So, I"m hopeful, they'll be fixed sooner rather than later.
I hope so...but it seems, that Netscape Browser-critical bugs have higher priority than the embedded stuf. I guess we will see more ppl hunting down the embedded bugs, after MOZ 1.0 and NS 7.0 final are out...