Somerset have signed West Indies batsman Chris Gayle for a portion of the NatWest T20 Blast tournament.
Somerset have appointed Alfonso Thomas as their one-day captain for the 2015 season.
Somerset have signed New Zealand all-rounder Corey Anderson for the second half of the NatWest T20 Blast season.
Somerset have signed Pakistan international Sohail Tanvir for the 2015 NatWest T20 Blast.
Somerset have signed Australian-born Holland international batsman Tom Cooper for the whole of the 2015 season.
Craig Kieswetter will visit specialists in Belgium and the USA over the next week to get to the bottom of his vision problems.
Keep up to date with all the county cricket signings and departures ahead of the 2015 season.
Somerset director of cricket Matthew Maynard has told Sky Sports he doubts whether a deal to bring Kevin Pietersen to Taunton is possible.
Craig Kieswetter could discover this week whether the eye injury he suffered last summer is likely to end his career.
Middlesex have re-signed England batsman Nick Compton following his decision to leave Somerset last month.
England will apply to the ICC to name a replacement for Craig Kieswetter in their initial squad for the 2015 World Cup.
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Craig Kieswetter is likely to miss the 2015 season after suffering a setback in his recovery from a serious eye injury.
County champions Yorkshire begin their title defence against Worcestershire on the opening day of the 2015 season.
Jim Allenby has been released from his contract with Glamorgan and is joining Somerset.
Former England opener Nick Compton has departed Somerset by mutual agreement with immediate effect.
Somerset all-rounder Peter Trego has signed a contract extension until at least the end of the 2016 season.
Former Zimbabwe skipper Dave Houghton is to step down as the batting coach for Somerset.
Pakistan bowler Abdur Rehman will return to Somerset for a second spell after signing terms for 2015.
Somerset fast bowler Alfonso Thomas has had surgery on a broken ankle after falling while playing golf.