The new Ladbrokes Premiership season starts on Saturday lunchtime, with Celtic beginning the defence of their trophy at home to Ross County.
Aberdeen and Inverness CT are looking to build on excellent 2014/15 campaigns while Hearts are back in the top flight after storming to the Championship title.
Manager: Derek McInnes
Last season: 2nd in the Premiership
New signings: Graeme Shinnie (Inverness CT), Joe Nuttall (Manchester City), Paul Quinn (Ross County), Danny Ward (Liverpool, loan)
Trivia: Dons striker Adam Rooney was the top scorer in the Premiership last season.
Manager: Ronny Deila
Last season: 1st in the Premiership
New signings: Dedryck Boyata (Manchester City), Saidy Janko (Manchester United), Logan Bailly (Leuven), Nadir Ciftci (Dundee United)
Trivia: Celtic are bidding to win the title for the fifth season in a row.
Manager: Paul Hartley
Last season: 6th in the Premiership
New signings: Rory Loy (Falkirk), Kane Hemmings (Barnsley), Daryll Meggatt (Alloa Athletic), Kevin Holt (Queen of the South), Nicky Low (Aberdeen), David Mitchell (Stranraer), Julen Etxabeguren Leanizbarrutia (East Fife), Nick Ross (Inverness CT)
Trivia: Dundee were the draw specialists in 2014/15, sharing the spoils on 12 occasions.
Manager: Jackie McNamara
Last season: 5th in the Premiership
New signings: Justin Johnson (FC United of Manchester), Mark Durnan (Queen of the South), Coll Donaldson (Queens Park Rangers), Darko Bodul (Rheindorf Altach), Rodney Sneijder (Almere City)
Trivia: Jackie McNamara is the longest-serving manager in the Ladbrokes Premiership, having taken over from Peter Houston in January 2013.
Manager: Martin Canning
Last season: 7th in the Premiership
New signings: Alan Martin (Clyde), Chris Turner (Dumbarton), Antons Kurakins (Ventspils), Gramoz Kurtaj (Banik Most), Christian Nade (Raith Rovers), Carlton Morris (Norwich City, loan), Salva Chamorro (Lleida Esportiu)
Trivia: Accies won 15 and lost 15 games last season, drawing the other eight.
Heart of Midlothian
Manager: Robbie Neilson
Last season: 1st in the Championship
New signings: Blazej Augustyn (Gornik Zabrze), Gavin Reilly (Queen of the South), Juanma Delgado (Kalloni), Igor Rossi Branco (Maritimo)
Trivia: Hearts racked up 91 points in the Championship last season and scored 96 goals.
Inverness Caledonian Thistle
Manager: John Hughes
Last season: 3rd in the Championship
New signings: Nat Wedderburn (Cowdenbeath), Jordan Roberts (Aldershot Town), Dani Lopez (La Roda), Owain Fon Williams (Tranmere Rovers)
Trivia: Caley Thistle lost only three of their 19 home games last season.
Manager: Gary Locke
Last season: 10th in the Premiership
New signings: Scott Robinson (Hearts), Jamie MacDonald (Falkirk), Kallum Higginbotham (Partick Thistle), Kris Boyd (Rangers), Steven Smith (Rangers), Stuart Findlay (Celtic, loan), Dale Carrick (Hearts), Lee McCulloch - player/coach (Rangers)
Trivia: Killie have been in the Premiership in every season since winning promotion in 1992/93.
Manager: Ian Baraclough
Last season: 11th in the Premiership
New signings: Joe Chalmers (Celtic), David Clarkson (Dundee), Wes Fletcher (York City), Louis Moult (Wrexham), Louis Laing (Nottingham Forest), Kieran Kennedy (Leicester City)
Trivia: Well have been in the top flight in every season since winning promotion in 1984/85.
Manager: Alan Archibald
Last season: 8th in the Premiership
New signings: Callum Booth (Hibernian), Tomas Cerny (Hibernian), David Amoo (Carlisle United), Gary Miller (St Johnstone)
Trivia: Partick Thistle had the best defensive record outside the top four last season.
Manager: Jim McIntyre
Last season: 9th in the Premiership
New signings: Brian Graham (Dundee United), Ian McShane (Queen of the South), Michael Gardyne (Dundee United), Scott Fox (Partick Thistle), Darren Holden (Hartlepool United), Stewart Murdoch (Fleetwood Town), Jonathan Franks (Hartlepool United), Ricky Foster (Rangers), Chris Robertson (Port Vale), Andrew Davies (Bradford City), Jackson Irvine (Celtic), Daniel Bachmann (Stoke City, loan)
Trivia: County went on a run of eight wins and a draw in nine games between mid-February and mid-April last season.
Manager: Tommy Wright
Last season: 4th in the Premiership
New signings: Brad Mckay (Hearts), Joe Shaughnessy (Aberdeen), Graham Cummins (Exeter City), John Sutton (Motherwell), Liam Craig (Hibernian)
Trivia: Saints are bidding to qualify for Europe for the fifth season in a row.