Pietersen has not played for England since making 149 in the second Test against South Africa in August after a storm over his text messages to South Africa players which allegedly contained "derogatory" references to Andrew Strauss.
That saw him miss out on their failed World Twenty20 title defence, the upcoming tour of India and a central contract for the new season.
But he has now signed a four-month contract with the ECB and a statement indicates Pietersen could be added to the party travelling to India later this month.
"ECB and Kevin Pietersen confirm that agreement has been reached concerning a process for his re-integration into the England team during the remainder of 2012. Upon completion of the programme, the England Selectors will consider Kevin for future matches," it read.
"Kevin Pietersen has apologised to Andrew Strauss and wishes to express to all those who support England his regrets at the impact the recent controversies have had on the England Team. He now wishes to put the events of the summer behind him and to focus on regaining his place in the England Team.
"With regards the issue of the BBM messages, due to the fact that Kevin had not retained the BBM messages, this matter has been successfully concluded through a binding assurance provided to ECB by Kevin.
"Kevin conceded that the messages exchanged were provocative. ECB is satisfied, following receipt of this binding assurance, that to the best of his recollection, Kevin did not convey any messages which were derogatory about the England Captain, the England Team Director, the ECB or employees of the ECB. Furthermore, there was no tactical information whatsoever provided to members of the South African Touring Party."
ECB chairman Giles Clarke, who joined Pietersen at a news conference in Colombo, said a "re-integration process", which was intended to pave the way for the player's recall, had begun with the pair meeting for 2-1/2 hours on Wednesday morning.
"Kevin Pietersen has apologised to Andrew Strauss and... he now wishes to put the events of the summer behind him and to focus on regaining his place in the England team," said Clarke reading from an ECB statement.
"England Teams Director Andy Flower will lead the (re-integration) process. He will determine the progress of that process and will advise the Board when the team, management and Kevin himself feel he is ready to be reconsidered.
"Following this, it will be up to the National Selector (Geoff Miller) and the England Teams Director to determine when he should be selected. It could be very soon," added Clarke.
Pietersen said that he was committed to England "in all formats" until at least 2015.
"I'd like to take this opportunity to apologise to my team mates, all England supporters and the ECB for the situation that has arisen over the last couple of months," Pietersen said in a prepared statement in the Sri Lankan capital, where he has been commentating for television on the ICC World Twenty20.
"Thankfully we have drawn a line under it and can move forward. Although it has been made clear in the statement, I'd like to make it clear that at no time did I share tactical information with any of the South Africans.
"It's been a horrible situation for all involved but it is time to move forward. All being well, I'll be back in an England shirt as soon as possible.
"I am committed to completing the reintegration process we have agreed over the coming weeks and resuming my England career in all formats, hopefully until the World Cup in 2015, as long as my body allows.
"I want my son growing up seeing me playing for England and I hope one day he will put an England shirt on himself."
England's top order, shorn of Pietersen's presence, failed to produce the runs required in Sri Lanka as the reigning champions' participation in the World Twenty20 ended at the Super Eight stage with defeat by the hosts.
Following England's elimination from the ICC World Twenty20 on Monday, their next competitive action is the tour of India that features four Tests, two Twenty20s and five one-dayers.
The first Test starts in Ahmedabad on November 15.
- Kevin Pietersen
- England team
- Andrew Strauss