Brian O'Driscoll will continue to play for Ireland and Leinster next season after agreeing a new one-year deal.
Leinster's double dreams are still alive after they came through a gripping RaboDirect PRO12 semi-final against Glasgow.
Ulster booked a place in the RaboDirect PRO12 final with relative ease with a 28-17 victory over the Scarlets at Ravenhill.
Wales international scrum-half Rhys Webb is to undergo surgery after suffering a knee injury.
Leinster have announced the appointment of Australian Matt O'Connor as their new head coach.
Round-up: The Scarlets crashed to an embarrassing 41-17 defeat to Treviso at Parc y Scarlets but still made the play-offs.
Scotland prop Alasdair Dickinson will return to Edinburgh on a one-year deal this summer.
Ospreys head coach Steve Tandy has signed a new four-year contract.
Paul O'Donohoe's last-gasp try salvaged a 23-23 draw for Connacht in the RaboDirect Pro12 encounter at Treviso.
Glasgow Warriors have confirmed that forward Nick Campbell will leave the club at the end of the season to join English Championship side Jersey.
Edinburgh have confirmed that four out-of-contract players will not be offered new deals at the end of the season.
Springbok full-back Zane Kirchner will join Irish side Leinster later this year after signing a two-year contract.
Leinster rose to second in the RaboDirect Pro12 table with a 41-22 victory away at Zebre.
The Scarlets moved back into the RaboDirect Pro12 play-off places with an impressive 24-6 derby win over Cardiff.
Newport Gwent Dragons ended a run of four straight RaboDirect Pro12 defeats as they beat Munster 30-24 on Friday.
Scotland's Nick De Luca returns from a seven-week suspension for Edinburgh's penultimate match of the season against Treviso.