First adopted by the UK in 2010, DVB-T2 is built on the foundations of the well-established DVB-T system, offering an increased efficiency of 30-50% in its use of spectrum compared to DVB-T. The improved efficiency allows extra channels and sharper HD pictures.
The UK adopted DVB-T2 in March 2010 quickly followed by three other European operators: Europa 7 in Italy, Boxer in Sweden and DNA in Finland. Other countries, including Austria, Germany, Denmark and Czech Republic are expected to follow suit this year.
With many countries yet to implement the original DVB-T, there remains a question mark over whether to go straight to T2, or press ahead with the mature –T technology.
DVB.org has published a useful article, providing more info