hey Nit3watch,
I can't offer any info on when seeds will be available. I've smoked all three, but I only remember G-13 and Utopia Haze (not sure why.... just can't remember what red dragon was like

).
Actually, I'm high on Utopia Haze right now (I study in Amsterdam, so.... woot!). I have to say, I didn't think Barney's could outdo last year's G-13 Haze, but I was wrong. I've got a medium tolerance for weed and I began to feel the effects of this one after two or three hits - which is something weed doesn't usually do for me these days. It's a sudden rush that blasts you in the head without you realizing it until you're already there! It feels expansive in the head with some incredible open-eye visuals in good dim lighting. Distorts your perspective, makes everything seem bigger around you. Very hazy of course. Utopia Haze feels like a 60 to 70 percent sativa with 30 or 40 percent indica. Not a particularly great working high because you just want to relax and experience the effects. It must have an incredibly high THC content (at least, the early-picks they're selling now are absolutely covered in crystals), probably 17-20%.
G13 Haze is also amazing, hits you hard and gets you high as you've ever been without being unpleasant. This will always be a favorite of mine, special because it really wears you out in the morning!
Best of luck growing, you can make great money off those strains. If those were available in my town back in the US, they would sell for ridiculously high prices.