I was fortunate enough to spend a year working in Thailand teaching English as a foreign language around the Millennium. It was a long time ago but I have been back since and have seen the countries rapid progress.
I have visited schools in rural areas in northern Thailand and very rural Laos, and can that this ipad scheme is no gimmick, it is going to level the playing field!
Teaching in Thai state schools can be incredibly strict with enormous class sizes (I often taught 40 in a class). This means the teachers need to keep a tight rein and often use very traditional ridged teaching techniques.
Its not just the children who will broaden their horizons through tech, there is enormous potential for Thai teachers to do on-line courses too.
The Thai love of fun and of things that are 'cool', make this a truly excellent marriage, and the best 'field experiment', in the effectiveness of tech in learning that I can think of. A year from now I'll be keeping an eye out for some solid data!