I'm interested in hosting in Boston. Not definite yet - my work is moving offices this summer and maybe (but probably not) I'm moving apartments for June 1. Which could potentially strain things. But I think that is not likely to be a major impediment. I can't do the week of June 8th, otherwise as far as I am currently aware the summer is wide open.
If it makes more sense to do Vancouver this summer, I am open to that (and will likely attend). Also as a stray thought, I'd be open to hosting a smaller gathering in the fall, maybe mid to late October when the leaves are turning and New England is particularly pretty.