Hi, I'm new to the smartphone scene but I've been around here a bit in the past. I have the same phone, had it for about 2.5 weeks now and love it other than battery life. I have since tweaked the phone to improve battery life a bit.
To answer your question we are looking at July sometime. See the Mobilesyrup link here. http://mobilesyrup.com/2012/05/23/be...droid-devices/
The first few days I owned the S2 HD LTE phone I thought I had made a huge mistake as I was getting frustrated finding my way around Android. Now that I have figured out the basics I love it!
Carrying 2 devices, I had been using an iPod touch in conjunction with my previous feature phone (a Samsung Impact) as a quasi cheap smartphone combo so to speak. So Being familiar with the iOS ecosystem I knew I did not want an iPhone as I thought it was too confining.
Now I have this and a data plan for the first time and wouldn't go back. I'm Really enjoying the experience.