In the United States, primary school is typically defined as being the first 4 years of a child's education. This includes kindergarten. The age range for primary school is 5-9 or possibly even 6-10.
I have no idea what you mean by "innovative digital technology" because this is a very general description with no specifications.
In terms of what school will be like in 2020, if NCLB (No Child Left Behind) is not rescinded here in the states, it is quite possible that 99% of all schools will have failed to meet AYP, annual yearly progress by 2014. Under the current terms of NCLB, schools failing to meet AYP for two or more years in a row may be taken over by the state.
Worst case scenario?
By 2020, U.S. public education as we know it could well be dead. Schools that have failed to meet AYP will be run as charter schools either by well intentioned individuals or more likely, by private for profit corporations such as Edison or Kaplan.
If NCLB has not been rescinded, we could be looking at standardized exit exams for high school seniors, standards based curriculum with specific measurable outcomes for each course, standardized tests for each year of college study, and/or mandatory college attendance (at least two years and an associate's degree) for all students.
Instruction will have become standardized so that each teacher on a given grade level will teach the exact same lesson to all students. Individual creativity will be gone. Teachers will no longer be teachers as much as they'll be educational accountants responsible for tweaking instruction to improve test scores.
The home school movement will have increased while those who can afford it will have pulled their kids from public school for enrollment in private schools.
Public schools could well become the schools of "last resort" either for those who don't have the time or ability to home school their children or those who can't afford to put their children in private schools.
Dark days are ahead if NCLB is approved for renewal as we appear to be in the process of creating an educated elite whose superior private education will give them a greater advantage over students educated in state funded schools.