/nnproject/

S60 1st Edition

2001
S60 v0.9
Symbian 6.1

S60 1st Edition FP1

2001
S60 v1.2
Symbian 6.1

S60 2nd Edition

2003
S60 v2.0
Symbian 7.0s

S60 2nd Edition FP1

2003
S60 v2.1
Symbian 7.0s

S60 2nd Edition FP2

2004
S60 v2.6
Symbian 8.0a

S60 2nd Edition FP3

2004
S60 v2.8
Symbian 8.1a

S60 3rd Edition

2005
S60 v3.0
Symbian 9.1

S60 3rd Edition FP1

2006
S60 v3.1
Symbian 9.2
Internal names: S60 3.1; Aino

S60 3rd Edition FP2

2007
S60 v3.2
Symbian 9.3
Internal names: S60 3.2; S60 3.2.3; S60 3.23 Gadget; Merlin

S60 5th Edition (aka Symbian^1)

2008
S60 v5.0
Symbian 9.4
Internal names: S60 5.0; S60 5.0 HN; S60 v5.0.1; 5.0/5250; PF52.50; S60 HW (Tube); Alvin; Ivalo; Saga; S60 4.0

Symbian^2

2009
S60 v5.1
Symbian 9.4
Internal names: S60 9.1; tb91; Corolla; Devlon
Unreleased, only available as PDK 2.0.3 emulator

Symbian^3

2010
S60 v5.2
Symbian 9.5
Internal names: S60 9.2; tb92; Vasco; Devlon

Symbian^4

2010
S60 v10.1
Symbian 9.6
Internal names: S60 10.1; S60 10.2; tb101
Unreleased, only available as PDK 4.0a source code

Symbian Anna

2011
S60 v5.2
Symbian 9.5

Symbian Belle

2012
S60 v5.3
Symbian 9.6
Internal names: S60 10.1; 101

Symbian Belle FP1

2012
S60 v5.4
Symbian 9.6

Symbian Belle Refresh

2012
S60 v5.3
Symbian 9.6 (?)

Symbian Belle FP2

2012
S60 v5.5
Symbian 9.6 (?)