Ulster have signed three tip-top Springboks in Ruan Pienaar, Johan Muller and Pedri Wannenburg, while there are new Bok props at both Leinster (Heinke van der Merwe ) and Munster (Wiaan du Preez).
Magners League Grand Final winners the Ospreys have gone 'native' by bringing in four Welsh players. Heading their recruitment cast is 2005 Grand Slam hooker Mefin Davies, who has returned from English Premiership champions Leicester Tigers, while Richard Fussell has joined from the Dragons and Dai Flanagan from the Blues.
Another Leicester Tiger who has switched leagues is Johne Murphy, who has joined Munster along with former Worcester Warriors centre Sam Tuitupou.
The Magners League record points scorer Dan Parks has headed 'south' to Cardiff Blues from Glasgow Warriors, while two Welsh internationals, Robin Sowden-Taylor and Scott Morgan, have switched from the Blues to the Dragons.
Connacht have brought Super 14 forward Ezra Taylor across from Queensland to bolster their pack and the two Scottish teams, Glasgow and Edinburgh, have signed Argentinean internationals Martin Aramburu and Esteban Lozada.
Magners League INS AND OUTS 2010
(Please note the below lists are not official squad lists. These will be detailed on www.magnersleague.com on the date of the official deadline.)
AIRONI RUGBY
IN: Kaine Robertson (Viadana), Carlo del Fava (Viadana), Quintin Geldenhuys (Viadana), Gabriel Pizarro (Rovigo), Andrea de Marchi (Rovigo), Fabio Ongaro (Saracens), Matias Aguero (Saracens), Ludovic Mercier (Petrarca), Alberto de Marchi (Overmach Parma), Simone Favaro (Overmach Parma), Roberto Quartaroli (Overmach Parma), Nicola Cattina (Calvisano), Giovanbattista Venditti (Gran Parma Rugby), Giulio Rubini (Gran Parma Rugby), Tito Tebaldi (Gran Parma Rugby), George Biagi (Cavalieri Prato), Gareth Krause (Venezia), Riccardo Bocchino (Rugby Roma), Paolo Buso (Rugby Roma), Nick Williams (Munster), Marco Bortolami (Gloucester), Fabio Staibano (Castres Olympique), Salvatore Perugini (Bayonne), Julien Laharrague (Montauban), Danwel Demas (Cheetahs), Dylan Des Fountain (Stormers)
BENETTON TREVISO
IN: Matteo Pratichetti (Viadana), Michele Sepe (Viadana), Gonzalo Padro (Petrarca), Paul Derbyshire (Petrarca), Manoa Vosawai (Overmach Parma), Francesco Minto (Overmach Parma), Edoardo Gori (Cavalieri Prato), Valerio Bernabò (Rugby Roma), Joe Maddock (Bath)
CARDIFF BLUES
IN: Dan Parks (Glasgow Warriors), Michael Paterson (Hurricanes), Tom Brown (London Welsh), Bryn Griffiths (Doncaster) Tom Davies (Doncaster)
OUT: Scott Morgan (NG Dragons), Dai Flanagan (Ospreys), Darren Allinson (London Irish), Robin Sowden-Taylor (NG Dragons), Sam Norton-Knight (Sanyo Wild Knights), Andy Powell (London Wasps), Billy Millard - Backs Coach (Retired)
CONNACHT
IN: Shane Monahan (Leinster), Darragh Fanning (Leinster), Ezra Taylor (Queensland Reds)
OUT: George Naoupu (Kobe Kobelco Steelers)
EDINBURGH
IN: Netani Talei (Worcester Warriors), Alex Grove (Worcester Warriors), Jack Gilding (Worcester Warriors), Esteban Lozada (Toulon), Dave Denton (Edinburgh Academicals), Stuart McInally, (Edinburgh University), James King (Melrose), Lee Jones (Selkirk)
OUT: Ryan Grant (Glasgow Warriors), Ali Hogg (Newcastle Falcons), Jim Hamilton (Gloucester), Dave Callam (Released), Simon Cross (Retired)
GLASGOW WARRIORS
IN: Ryan Grant (Edinburgh), Federico Martin Aramburu (Dax), Robert Harley (West of Scotland), James Fleming (Dundee HSFP), Ryan Wilson (Moseley), Aly Muldowney (Moseley), Duncan Weir (Glasgow Hawks), Alex Dunbar (Selkirk), Chris Fusaro (Heriot's FP), Henry Pyrgos (Loughborough University)
OUT: Dan Parks (Cardiff Blues), Mark McMillan (Bath), Kelly Brown (Saracens), Dan Turner (Toyota Shokki Shuttles), Tim Barker (Ulster)
LEINSTER
IN: Ed O'Donoghue (Ulster), Isaac Boss (Ulster), Heinke van der Merwe (Golden Lions), Joe Schmidt - Head Coach (Clermont Auvergne)
OUT: CJ Van Der Linde (Cheetahs), Simon Keogh (Released), Chris Keane (Released) Malcolm O'Kelly (Retired), Girvan Dempsey (Retired), Bernard Jackman (Retired), Michael Cheika (Coach - Stade Francais), Chris Whittaker (Team Manager - Stade Francais), Alan Gaffney - Backs Coach (IRFU), Kurt McQuilken - Defence Coach (Retired), Kyle Tonetti (Sale Sharks)
MUNSTER
IN: Johne Murphy (Leicester Tigers), Sam Tuitupou (Worcester Warriors), Wian Du Preez (Cheetahs), Peter Borlase (Crusaders), Corey Hircock (Bedford)
OUT: Nick Williams (Aironi Rugby), Jeremy Manning (Newcastle Falcons), Julien Brugnaut (Racing Metro), Jean de Villiers (Stormers), Ciaran O'Boyle (Released)
NEWPORT-GWENT DRAGONS
IN: Matthew Jones (Worcester Warriors), Hugo Ellis (London Wasps), Arthur Ellis (London Wasps), Nicky Griffiths (Doncaster), Andrew Coombs (Newport), Tom Evans (Hartpury College), Danny Wilson - Forwards Skills Coach (London Welsh), Scott Morgan (Cardiff Blues), Robin Sowden-Taylor (Cardiff Blues)
OUT: Richard Fussell (Ospreys), Hoani MacDonald (Melbourne Rebels), Grant Webb (Otago), James Arlidge (Nottingham), James Harris (Released), Alex Walker (Released)
OSPREYS
IN: Dai Flanagan (Cardiff Blues), Richard Fussell (NG Dragons), Mefin Davies (Leicester Tigers), Morgan Allen (Pontypool)
OUT: Ed Shervington (Worcester Warriors), Marc Breeze (London Welsh), Liam Davies (Dax), Ross Davies (Released), Jonny Vaughton (Released), Lyndon Bateman (Retired), Filo Tiatia (Retired)
SCARLETS
IN: Joe Ajuwa (Llandovery)
OUT: Rob Higgitt (Worcester Warriors), Darren Daniel (Carmarthen Quins), Jamie Corsi (Released), John Muggleton (Defence Coach)
ULSTER
IN: Ruan Pienaar (Sharks), Johann Muller (Sharks), Pedrie Wannenburg (Bulls), Tim Barker (Glasgow Warriors)
OUT: Ed O'Donoghue (Leinster), Isaac Boss (Leinster), Timoci Nagusa (Montpellier), Clinton Schifcofske (Crusaders, Rugby League), Justin Fitzpatrick (Retired), Matt McCullough (Retired), Tamaiti Horua (Released)
Guinness PRO12
Suite 208, Alexandra House,
The Sweepstakes
Ballsbridge, Dublin 4, Ireland