In reply to El Greyo:
I've talked to the guidebook team quite a lot. They used to run a campground in the area, and are two of sweden's most accomplished trad climbers, and the small pamphlet with ten crags they released a few years ago is good, so I'm sure the guidebook is going to be great. However, I doubt the guide is going to be in the stores before October even if everything goes well. The new guidebook is going to have directions and crag descriptions in english, but route descriptions only in Swedish. (I don't think the route descriptions are necessary, the lines and quality of protection are totally obvious in general).
There is some information on
http://gamlasverigeforaren.se/index.php/Bohuslän (scroll down on each crag for directions in English)
Oh, and in late June there is going to be a lot of climbers around. Stay at one of the climbers campground (Bohuslän's climbing clubs hut or The campground at Häller) and there will be plenty of people to ask.
Post edited at 13:29